Cited by 1Biblical Studies and InterpretationHistorical Astronomy and Related StudiesHistorical, Religious, and Philosophical Studies

The Tradition of the 364-Day Calendar versus the Calendar Polemic in Second Temple Judaism

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Klukowski, Michał Jarosław·2020·Verbum Vitae

Abstract

The article presents the major hypotheses concerning the emergence of the 364-day calendar within Judaism and the related calendrical controversy, which presumably caused the separation of a certain group of Jews, known to us as the Qumran Community, from the temple cult in Jerusalem. It is not known whether the 364-day calendar tradition is older than that of the Astronomical Book, or whether the adoption of this tradition was accompanied by conflicts. The Qumran texts do not provide unequivocal evidence for any calendrical polemics. The only witness to these polemics is The Book of Jubilees, copies of which were found in the Qumran library. However, the Qumran Community itself did not share the radical line of The Book of Jubilees, which condemns reliance on the moon in time-keeping. The 364-day calendar is presumed to have been a distinctive feature of the Qumran Community, which however did not arouse any controversies within Second Temple Judaism.

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Written from the paper’s full text.

TL;DR

This article reviews hypotheses about the origin of the 364-day calendar in Second Temple Judaism and whether it caused a calendrical polemic that separated the Qumran Community from the Jerusalem temple cult. It concludes that the Qumran texts do not provide unequivocal evidence for such a polemic; only the Book of Jubilees distinctly and unequivocally criticizes lunar-based time-keeping.

Key findings

  • The 364-day year consists of twelve 30-day months plus one extra day at the end of each quarter, totaling 364 days; it does not correspond to the solar year of 365.25 days, and except for the Book of Jubilees, its users did not negate lunar phenomena.
  • The first Jewish witness to the 364-day year is the Astronomical Book of 1 Enoch (3rd century BC), followed by the Book of Jubilees (mid-2nd century BC) and Qumran texts (2nd century BC–1st century AD); no textual evidence explains how the community solved the disparity between the schematic 364-day year and the solar year.
  • The Qumran texts do not provide unequivocal evidence for calendrical polemics; the only witness to a distinct polemic against the lunar-based calendar is the Book of Jubilees, and the Qumran Community itself did not share its radical condemnation of lunar time-keeping.
  • The presence of the 364-day calendar in 4QMMT is residual in 4Q394 and is not mentioned elsewhere in the document; the calendar’s presence does not prove a conflict between the 364-day and lunisolar calendars, and copies of the Songs of the Sabbath Sacrifice at Masada show the calendar was not exclusively Qumranic.

Methods

  • Historical-critical review and synthesis of major scholarly hypotheses on the emergence of the 364-day calendar and the related calendrical controversy in Second Temple Judaism.
  • Analyzes Qumran texts (e.g., 1QpHab, CD, 1QS, 4QpHos a, 4QMMT/4Q394), the Astronomical Book of 1 Enoch, the Book of Jubilees, and secondary scholarship.
  • Main analysis is comparative evaluation of hypotheses by Jaubert, Stegemann, Wacholder, Feldman, Beckwith, Eshel, Stern, VanderKam, Davies, and others against the textual evidence.

Limitations

  • The paper states that there is a lack of textual evidence and no consensus on whether the 364-day calendar tradition is older than the Astronomical Book or whether its adoption was accompanied by conflicts.
  • The paper notes uncertainty over whether the 364-day calendar was used in the temple cult, whether the 4QMMT calendar was original or added later, and whether any calendar controversy caused the emergence of the Qumran Community.
  • Evident from the text: this is a review essay relying on published scholarship and textual interpretations rather than new manuscript data or quantitative analysis.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.31743/vv.4831

Cites

44 of 44 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 24 cited sources checked · 0 supported · 0 flagged

  • Findingnone given

    No textual evidence has yet been found to explain how the community solved the factual disparity between the 364-day schematic year and the solar year over long periods.

    “no textual evidence has yet been found, which would allow us to explain how the community solved the factual disparity between the 364-day schematic year and the solar year, especially over a period of several years or a few dozen decades.”
    Quote in the paperSubstantial claim
  • Findingcitation

    After publication of all available Qumran manuscripts, it became evident that the 364-day year was the basis for almost all the calendrical texts.

    “After the publication of all the available manuscripts from Qumran it became evident that the 364-day year was the basis for almost all the calendrical texts.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Abegg, "The Calendar at Qumran, " 154-171.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Findingnone given

    The Qumran texts do not provide unequivocal evidence for any calendrical polemics.

    “The Qumran texts do not provide unequivocal evidence for any calendrical polemics.”
    Quote in the paperSubstantial claim
  • Findingnone given

    The essential feature of the 364-day year, as it appears in Qumran writings, is the constancy of its days, irrespective of astronomical phenomena and the actual length of the lunar and solar years.

    “The essential feature of this year, as it appears in the writings of the Qumran community, is the constancy of its days, irrespective of astronomical phenomena and the actual length of the lunar and solar years.”
    Quote in the paperSubstantial claim
  • Findingnone given

    There is still no evidence dating from the Persian period that could confirm a radical calendar revolution, especially in the context of the celebration of the Sabbath.

    “there is still no evidence dating from the Persian period that could confirm such a radical calendar revolution, especially in the context of the celebration of the Sabbath.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. 25
  • May combine two claims. 30
  • The quote only partly states this claim. 1
  • Probably not a substantial claim: may not pass S4 (based).

    Findingnone given

    It is puzzling why a centuries-old traditional calendar that does not correspond to the factual solar or lunar year bears no evidence of an intercalation system.

    “It is also puzzling why a centuries-old tradition calendar that does not correspond to the factual solar or lunar year bears no evidence of a intercalation system that would solve the problem of the real difference between the 364-day year and the solar year.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The absence of textual evidence for an intercalation system means that no such system existed.
  • May combine two claims.

    Findingnone given

    The schematic 364-day year emerged in Judaism first in the Astronomical Book of Henoch (3rd century BC), then in The Book of Jubilees (mid-2nd century BC), and finally in texts discovered at Qumran (2nd century BC-1st century AD).

    “The schematic 364-day year emerged in Judaism for the first time in the Astronomical Book of Henoch (1 Hen 72-82, 3rd century BC 13 ), then in The Book of Jubilees (mid-2nd century BC 14 ), and finally, in texts discovered at Qumran (2nd century BC-1st century AD).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingreasoning

    The only witness to these polemics is The Book of Jubilees, copies of which were found in the Qumran library.

    “The only witness to these polemics is The Book of Jubilees, copies of which were found in the Qumran library.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingreasoning

    The 364-day year does not correspond to the actual length of the solar year (365.25 days), so it cannot be described as a solar year.

    “As the 364-day year does not correspond to the actual length of the solar year (365.25 days), it cannot be described as a solar year”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Findingcitation

    Its author warns that all those who calculate according to the moon phases will notice that the moon disturbs the seasons, reducing it by ten days a year.

    “Its author warns that all those who calculate according to the moon phases will notice that the moon disturbs the seasons, reducing it by ten days a year.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingreasoning

    Although the Astronomical Book presents the 364-day year in a neutral and scientific way, the text 72:1-3 betrays the author's polemic against a group that did not insert four additional days in the 360-day year.

    “Although the Astronomical Book presents the 364-day year in a neutral and scientific way, the text 72:1-3 betrays the author's polemic against a group that did not insert four additional days in the 360-day year (72:1).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    In scroll 4Q395, preserving the beginning of the halakhic section, there is no trace of any text preceding it; the wide right margin suggests the opening fragment was the beginning of a new scroll.

    “Moreover, while in the scroll 4Q394, the halakhic part immediately follows the calendar, in the scroll 4Q395, preserving the beginning of the halakhic section, there is no trace of any text preceding it; on the contrary, the wide margin on the right side (17.5 mm) suggests that the opening fragment of 4Q395 was the beginning of a new scroll.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingreasoning

    After the affiliation of scroll 4Q394 1-2 to 4QMMT has been negated, only the conclusion of the calendar remains, which allows identification as a 364-day calendar but makes it impossible to establish its exact relationship with other calendrical texts from Qumran.

    “After the affiliation of the scroll 4Q394 1-2 to 4QMMT 95 has definitely been negated, what was left from the calendar was only its conclusion, 96 which, although allowing us to identify it as a 364-day calendar, makes it impossible to establish its exact relationship with other calendrical texts from Qumran.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingcitation

    The author shows that this calculation was erroneous, referring to the authority of Uriel the angel.

    “The author shows that this calculation was erroneous (72:2), at the same time referring to the authority of Uriel the angel, to whom God gave knowledge about all the luminaries of the heaven (72:3).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingreasoning

    82:5 suggests that this group did not insert the four extra days as an act of ill will, but rather an act of miscalculation born out of ignorance.

    “However, 82:5 suggests that this group did not insert the four extra days to a year as an act of ill will, but rather an act of miscalculation simply born out of ignorance.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Findingnone given

    Despite lack of textual evidence proving the 364-day calendar was used in Judah during the Second Temple period, numerous scholars refer to its appearance in the first post-exilic years.

    “Despite the lack of textual evidence proving that the 364-day calendar was used in Judah during the Second Temple period, numerous scholars refer to the appearance of the 364-day year in the first post-exilic years.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Findingreasoning

    The hypotheses concerning the emergence of the 364-day calendar in Judaism lead to many possibilities due to the lack of textual evidence.

    “The hypotheses, which have briefly been presented, concerning the emergence of the 364-day calendar in Judaism lead to many possibilities due to the lack of textual evidence.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Findingreasoning

    Josephus and Philo of Alexandria, characterising the Essene community, did not mention a calendar that would be their distinctive feature.

    “This may explain why Josephus and Philo of Alexandria, characterising the Essene community, did not mention a calendar that would be their distinctive feature.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Findingnone given

    There is no consensus as to whether this year was adopted from Babylonia as a 364-day scheme or whether it emerged from the ideal 360-day year.

    “there is no consensus as to whether this year was adopted from Babylonia as a 364-day scheme or whether it emerged from the ideal 360-day year”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingnone given

    The Qumran texts do not share a hostile attitude towards lunar phenomena, nor do they favour the sun or impose their tradition of the 364-day calendar.

    “Although copies of this book are attested in the Qumran library, and the Damascus Document reveals that the calendar was already known (CD XVI,3-4), the Qumran texts themselves do not share a hostile attitude towards lunar phenomena, nor do they favour the sun or impose their tradition of the 364-day calendar.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Findingnone given

    The halakhic texts show the Qumran community as extremely radical in interpreting the Mosaic Law.

    “Nonetheless, some texts seem to suggest that there may have been disputes over the incorrect observance of the Sabbath and some festivals, which is probable since the halakhic texts show the Qumran community as extremely radical in interpreting the Mosaic Law.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationcitation

    It is not correct to opt for a synchronous calendar because the concept of the 364-day year is based on a theoretical calculation and is not an attempt to reconcile the sun's movements and the lunar phases.

    “Moreover, it is also not correct to opt for -as Milik did 11 -a synchronous calendar since the concept of the 364-day year is based on a theoretical calculation and is not an attempt to reconcile the sun's movements and the lunar phases.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Milik, The Books of Enoch, 274-276.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationreasoning

    This calendrical tradition must have existed within Judaism for some time before it was written down.

    “Obviously, this calendrical tradition must have existed within Judaism for some time before it was written down”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    The 364-day year probably originated from the Babylonian ideal 360-day year.

    “The 364-day year probably originated from the Babylonian ideal 360-day year, although scholars have discussed the probable presence of the 364-day year in the Babylonian texts.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    The non-biblical Jewish texts from the 7th century BC and from the 5th-4th centuries BC contain the lunisolar calendar, which was in force in Syro-Palestine and used by Jews at Elephantine.

    “The fact is that the non-biblical Jewish texts from the 7th century BC 46 and from the 5th-4th centuries BC 47 contain the lunisolar calendar, which at that time was in force in Syro-Palestine and was also used by the Jews at Elephantine.”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites Avigad, "Epigraphical Gleaning from Gezer, " 43-49

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Porten, "The Calendar of Aramaic Texts, " 13-32

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    The Aramaic texts from Elephantine and slaves' sale documents in Samaria both testify to the Babylonian lunisolar calendar.

    “Referring to the Aramaic texts from Elephantine (5th century BC) 27 and slaves' sale documents in Samaria (5th-4th cc.BC) 28 -both of which testify to the Babylonian lunisolar calendar”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites Porten -Yardeni, Textbook of Aramaic Documents, II, 18

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Gropp, "The Samaria Papyri from Wadi Daliyeh, " 3-116.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationreasoning

    The Qumran texts testify to a difference in the approach to celebrating sabbaths and festivals between the Qumran community and the rest of Israel, but they do not necessarily show that this difference was due to the use of different calendars.

    “Although these texts do testify to the difference in the approach to the celebration of the sabbath days and other festivals between the community of Qumran and the rest of Israel, they do not necessarily show that it was due to the usage of different calendars.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The mere fact that the 364-day calendar differed significantly from the one prevailing in Judea, the Jewish diaspora and the entire Middle East was a sufficient reason to consider it to some extent sectarian.

    “According to Stern, the mere fact that the 364-day calendar differed significantly from the one prevailing in Judea, the Jewish diaspora and in the entire Middle East was a sufficient reason to consider it to some extent sectarian.106”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Stern, "The 'Sectarian' Calendar of Qumran, " 46

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    The calendrical differences were inevitable and might have been approached with sheer indifference.

    “On the contrary, the calendrical differences were inevitable and might have been approached with sheer indifference.108”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Stern, "Qumran Calendars and Sectarianism, " 250

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationreasoning

    On the basis of the Qumran texts, it cannot be proved that in the first half of the second century BC there was a calendar polemic between supporters of the 364-day calendar and those of the lunisolar calendar, nor that such a polemic was the main reason for the emergence of the Qumran community.

    “In view of these objections, it must be stated that on the basis of the Qumran texts, it cannot be proved that in the first half of the second century BC there was a calendar polemic between the supporters of the 364-day calendar and those of the lunisolar calendar, and consequently, that such a polemic was the main reason for the emergence of the community at Qumran. 100”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    The document 4QMMT is moderately polemical because its authors assume the addressee will change his behaviour and influence the priests in Jerusalem.

    “The document is moderately polemical because its authors assume that the addressee will change his behaviour and will influence the priests in Jerusalem.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    The status of being sectarian does not necessarily result from a polemic with the outside world, in this case with the Judean elite.

    “At the same time, he points out that the status of being”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Stern, "The 'Sectarian' Calendar of Qumran, " 55

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    The mere fact that there was a 360-day year in Babylonian texts does not explain the innovative transition to the 364-day year at all, for it may well have been inspired by other sources.

    “Nevertheless, the mere fact that there was a 360-day year in the Babylonian texts does not explain the innovative transition to the 364-day year at all, for it may well have been inspired by other sources.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    The author of 1QS I,14-15 simply expresses concern about accurate recognition of a festival day because the community, separated from official worship and living in the desert, was solely dependent on itself in calendar reckoning.

    “It seems that at this point the author simply expresses his concern about the accurate recognition of a festival day because, as mentioned before, the community, being separated from the official worship and in addition, living in the desert, was solely dependent on itself in calendar reckoning.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    The order in 1QS I,14-15 not to advance appointed times nor postpone seasons is universal in sense and can apply to any calendar; if polemical, it would rather concern a reprehensible practice that may apply to the 364-day calendar if used in official cult.

    “However, the order is actually universal in its sense, and it can theoretically apply to anyone who follows any calendar.If a polemical tone was intended here, it would rather concern the reprehensible practice that may well apply to the 364-day calendar if it were then used in the official cult.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    The Qumran community divided God's laws into revealed and hidden; knowledge of dating based on the 364-day calendar belonged to hidden things revealed only to the community.

    “At this place, we need to explain that the community at Qumran divided God's laws as revealed ‫)נגלה(‬ and hidden ‫,)נסתר(‬ the former were available to all Israel, whereas the latter were revealed only to the community and were forbidden to be revealed to anyone outside the community.86 Therefore, while the sabbaths and festivals ordered in the Law of Moses were revealed and known to all Israel,”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Schiffman, The Halakhah at Qumran, 22-32

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims. The quote only partly states this claim.

    Interpretationreasoning

    CD VI,17-18 can be interpreted similarly, and the required ability to distinguish holy from profane is understandable because the community, after separating from temple worship, was solely dependent on itself in setting the temple rhythm.

    “The required ability to distinguish holy from profane, which is mentioned in the same text, is understandable in view of the situation of the community, which, after separating itself from the temple worship, is solely dependent on itself in setting the temple rhythm.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    In CD III,12-15, the polemic focuses not so much on the time of observance but on the manner of celebration, and there is no indication that the inappropriateness lies in wrong dates of observance.

    “Thus, in the text CD III,12-15, apart from the problem of whether the hidden things concerning which Israel goes astray, actually include sabbaths and festivals, 87 the polemic focuses not so much on the time of their observance but rather on the manner of their celebration”
    • Also stated in: § 4. The 364-day Year -Qumran Community vs. Calendar Polemic · plain
      “There is no indication, however, that this inappropriateness lies in the wrong dates of their observance.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    Since there is no evidence that the 364-day calendar was used in the temple cult from the mid-2nd century BC, the Qumran community's writing could not have received a positive response, and hence the community separated itself from the official cult.

    “Since there exists no evidence that the 364day calendar was used in the temple cult from the mid-2nd century BC, the writing of the Qumran community could not have received a positive response; hence the community separated itself from the official cult.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    The Hosea Pesher's criticism was first of all directed against those who participated in pagan festivals, not necessarily against a different Jewish calendar.

    “Without excluding the possibility of a relationship between these two texts, it should be noted that their criticism was first of all directed against those who in any way participated in the pagan festivals.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    The 364-day calendar tradition was very diverse, with non-linear development and lack of a monolithic form.

    “Also, Glessmer stresses the fact that the 364-day calendar tradition was very diverse, at the same time noticing its non-linear development and lack of a monolithic form.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Glessmer, "Calendars in the Qumran Scrolls, " 233, 274

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationreasoning

    The redactor of 4QMMT added a 364-day calendar to the document with the intention of including it in the content of the covenant, so as to present it as normative as the list of ordained holidays in Exod 23:14-17 and Deut 16:1-17.

    “The redactor of 4QMMT, referring to the theology of the covenant, would have added a 364-day calendar to the document with the intention of including it in the content of the covenant, so as to present it as normative as it was done in the case of the list of the ordained holidays in Exod 23:14-17 and Deut 16:1-17.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Interpretationreasoning

    If there was a controversy suggested by the calendar in 4QMMT, it need not have concerned the conflict between the 364-day and lunisolar calendars; it might have concerned celebration of festivals and sabbaths within the same 364-day calendar.

    “Further, if there were any controversy, as suggested by the mere presence of the calendar in this polemical work, it must not have concerned the conflict between the 364-day calendar and the lunisolar calendar; the conflict might also have been related to the celebration of festivals and sabbaths within the same 364-day calendar.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    As The Book of Jubilees is dated to the mid-second century BC, after the Maccabean Revolt but before the Qumran community was formed, its calendar polemic against the deceptive observations of the moon may reflect the events that led to the formation of the Qumran community and the preservation of the 364-day year tradition.

    “As The Book of Jubilees is dated to the mid-second century BC, i.e. after the Maccabean Revolt, but before the community of Qumran was formed, 56 its calendar polemic against the deceptive observations of the moon (Jub.6:35-38) may reflect the events that led to the formation of the Qumran community and consequently, the preservation of the 364-day year tradition.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites VanderKam, Textual and Historical Studies, 282-285.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Interpretationnone given

    This was only done by a certain group of Judeans, while all the rest continued to follow the lunisolar calendar.

    “Naturally, this was only done by a certain group of Judeans, while all the rest continued to follow the lunisolar calendar”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    The Qumran community adopted the 364-day calendar because it is divisible by 7, adaptable to the sabbath cycle, and does not contradict the biblical tradition.

    “It is much more likely that the community adopted this calendar 104 because of its divisibility by number 7 and the possibility of adopting it to the sabbath cycle, and due to the fact that it does not contradict the biblical tradition.105”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    Unlike the Astronomical Book, the author of The Book of Jubilees does not address the problem of unconsciously omitting the four extra days because he does not even mention them, but he clearly aims his criticism at the followers of the lunar year, while opting for the solar year.

    “Thus, unlike the Astronomical Book, the author of The Book of Jubilees does not address the problem of unconsciously omitting the four extra days in the year because he does not even mention them, 55 but he clearly aims the shafts of his criticism at the followers of the lunar year, while opting for the solar year.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    Calendar discrepancies were not uncommon in the ancient Near East, and no one called this practice sectarian for this reason.

    “Further, calendar discrepancies were not uncommon in the ancient Near East, and no one called this practice”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Stern, "Qumran Calendars and Sectarianism, " 250

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationreasoning

    As there is no doubt that the author of the Astronomical Book was inspired by the Babylonians' astrological knowledge, the pre-exilic origin of the 364-day calendar should rather be ruled out.

    “As there is no doubt that the author of the Astronomical Book was inspired by the Babylonians' astrological knowledge, 48 the pre-exilic origin of the 364-day calendar should rather be ruled out”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    The incompatibility of the 364-day calendar with the lunisolar calendar and with movements of celestial bodies could have resulted in its rejection as completely impractical.

    “the incompatibility with the latter, and also with the movements of the celestial bodies, could have resulted in the rejection of the new calendar as completely impractical.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Interpretationnone given

    It is not known whether the calendar controversy caused the emergence of the Qumran community.

    “troversy caused the emergence of the Qumran community, nor is it known whether the adoption of this tradition (not later than in the 3rd century BC) was related to any polemic at all.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Interpretationnone given

    It is not known whether the adoption of the 364-day calendar tradition (not later than in the 3rd century BC) was related to any polemic at all.

    “troversy caused the emergence of the Qumran community, nor is it known whether the adoption of this tradition (not later than in the 3rd century BC) was related to any polemic at all.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    According to Beckwith, the 364-day calendar could have influenced the shape of the canon of the Hebrew Bible in the Qumran community.

    “According to Beckwith, this may prove that the 364-day calendar could have influenced the shape of the canon of the Hebrew Bible in the Qumran community.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Beckwith, "The Significance, " 54-66

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

48 of 48
  • The authors state this as an assumption.

    The 364-day calendar was a distinctive feature of the Qumran Community.

    “The 364-day calendar is presumed to have been a distinctive feature of the Qumran Community”
  • The paper relies on this without support.

    The absence of textual evidence for an intercalation system means that no such system existed.

    “bears no evidence of a intercalation system that would solve the problem of the real difference between the 364-day year and the solar year.”
  • The authors state this as an assumption.

    The 364-day calendar was in the original version of 4QMMT, created at the early stage of the Qumran community in the mid-2nd century BC.

    “Assuming that the calendar was in the original version of the work that was created at the early stage of the community at Qumran (mid-2nd century BC), 93 its placement may testify to a real calendar conflict with the superior of Judah and the caste of the temple priests, as a result of which the Qumran community was founded.94”
3 of 3

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • The same proposed restoration is dated both BC and AD

    Minor

    The passage dates the proposed calendar restoration to 23 March 156 BC, then says that 156 AD coincides with an intersacerdotium dated 159-152 BC. The AD date cannot fall within that BC interval.

1 of 1

Cites

Flagged first, then by citations

Research works printed but not linked: 21

  1. Ben-Dov, J., “The 364-Day Year in the Dead Sea Scrolls and Jewish Pseudepigrapha,” Calendars and Years II. Astronomy and Time in the Ancient and Medieval World (ed. J.M. Steele) (Oxford: Oxbow 2011) 69–106.
  2. Davies, P.R., “Calendrical Change and Qumran Origins: An Assessment of VanderKam’s Theory,” Catholic Biblical Quarterly 45 (1983) 80–89.
  3. Drawnel, H., The Aramaic Astronomical Book (4Q208–4Q211) from Qumran. Text, Translation, and Commentary (Oxford: Oxford University Press 2011).
  4. Gropp, D.M., “The Samaria Papyri from Wadi Daliyeh,” Wadi Daliyeh II and Qumran Cave 4. XXVIII (eds. D.M. Gropp – J.C. VanderKam – M. Brady) (Discoveries in the Judaean Desert 28; Oxford: Clarendon 2001) 3–116.
  5. Horowitz, W., “The 360 and 364 Day Year in Ancient Mesopotamia,” Journal of Ancient Near Eastern Studies 24 (1996) 35–44.
  6. Jaubert, A., The Date of the Last Supper (trans. I. Rafferty) (Staten Island, NY: Alba 1965).
  7. Milik, J.T., The Books of Enoch. Aramaic Fragments of Qumrân Cave 4 (Oxford: Clarendon Press 1976).
  8. Porten, B. – Yardeni, A. (eds.), Textbook of Aramaic Documents from Ancient Egypt (Jerusalem: Hebrew University 1989) II.
  9. Qimron, E. – Strugnell, J., Qumran Cave 4. V. Miqṣat Maʿaśe ha-Torah (Discoveries in the Judaean Desert 10; Clarendon: Oxford 1994).
  10. Schiffman, L.H., “The Place of 4QMMT in the Corpus of Qumran Manuscripts,” Reading 4QMMT. New Perspectives on Qumran Law and History (eds. J. Kampen – M. Bernstein) (Society of Biblical Literature Symposium Series 2; Atlanta, GA: Scholar Press 1997) 81–98.
  11. Stern, S., Calendar and Community. A History of the Jewish Calendar Second Century BCE–Tenth Century CE (Oxford: Oxford University 2001).
  12. Strugnell, J., “Appendix 3. Additional Observations on 4QMMT,” E. Qimron – J. Strugnell, Qumran Cave 4.V. Miqsat Maʿaśe ha-Torah (Discoveries in the Judaean Desert 10; Oxford: Clarendon 1994) 203–206.
  13. Strugnell, J., “MMT: Second Thoughts on a Forthcoming Edition,” The Community of the Renewed Covenant. The Notre Dame Symposium on the Dead Sea Scrolls (eds. E. Urlich – J.C. VanderKam) (Christianity and Judaism in Antiquity 10; Notre Dame, IN: University of Notre Dame 1994) 57–73.
  14. Sussman, Y., “The History of Halakha and the Dead Sea Scrolls: Preliminary Observations on Miqsat Maʿase Ha-Torah (4QMMT),” E. Qimron – J. Strugnell, Qumran Cave 4. V. Miqṣat Maʿaśe ha-Torah (Discoveries in the Judaean Desert 10; Oxford: Clarendon 1994) 179–200.
  15. Talmon, S., “Calendars and Mishmarot,” Encyclopedia of the Dead Sea Scrolls (eds. L.H. Schiffman – J.C. VanderKam) (New York: Oxford University 2000) I, 108–117.
  16. Talmon, S. – Ben-Dov, J. – Glessmer, U., Qumran Cave 4. XVI. Calendrical Texts (Discoveries in the Judaean Desert 21; Clarendon: Oxford 2001).
  17. VanderKam, J.C., Calendars in the Dead Sea Scrolls. Measuring Time (New York: Taylor & Francis eLibrary 2005).
  18. VanderKam, J.C., “The Origin, Character and Early History of the 364-Day Calendar,” Catholic Biblical Quarterly 41 (1979) 390–411.
  19. VanderKam, J.C. – Milik, J.T., “Jubilees,” Qumran Cave 4. VIII. Parabiblical Texts. I (ed. J.C. VanderKam) (Discoveries in the Judaean Desert 13; Oxford: Clarendon 1994) 1–140.
  20. Vermes, G., The Complete Dead Sea Scrolls in English, 7 ed. (London: Penguin 2012).
  21. Wise, M.O., “Thunder in Gemini: An Aramaic Brontologion (4Q318) from Qumran,” Thunder in Gemini And Other Essays on the History, Language and Literature of Second Temple Palestine (Journal for the Study of the Pseudepigrapha Supplement Series15; Sheffield: Journal for the Study of the Old Testament 1994) 13–50.

Authors
Klukowski, M. J.
Affiliations
John Paul II Catholic University of Lublin (PL)
Corresponding author
Klukowski, Michał Jarosław
Venue
Verbum Vitae
Published
2020-12-21
Volume
38
Issue
1
ISSN
  • 1644-8561 (ISSN-L)
  • 2451-280X
OpenAlex
W3116257340
Cited by
1
References
43
Citations by year
2023: 1
FWCI
2.24
Type
journal article
Language
en
Open access
Locations
  • Verbum Vitae (publishedVersion, cc-by-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Social Sciences › Arts and Humanities › Religious studies › Biblical Studies and Interpretation
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Historical Astronomy and Related Studies
  • Social Sciences › Arts and Humanities › Archeology › Historical, Religious, and Philosophical Studies
Keywords
364-day calendar, Second Temple Judaism, Qumran community, Book of Jubilees, lunar calendar, Qumran library

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-23.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-23.

Statistics and arithmetic are recomputed, not judged.

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