Power of 7: Could an ancient political feud explain Qumran sect’s faulty 364-day calendar?

New research by Professor Eshbal Ratzon of Tel Aviv University offers a solution to the long-standing puzzle of the Qumran sect's 364-day solar calendar, detailed in the Dead Sea Scrolls. This calendar, which lost 1.25 days annually, was central to a bitter dispute between the Qumran community (often associated with the Essenes) and the mainstream Pharisee community around 2,100 years ago. Ratzon suggests the calendar was indeed used by the Qumran sect, not merely as a theoretical model, but was later abandoned due to its increasing inaccuracy and improved political relations with the Hasmonean king Alexander Jannaeus. The calendar's appeal lay in its divisibility by seven, ensuring every date fell on the same day of the week annually, which Qumran elders may have seen as a "perfect divine order." However, its practical flaws eventually became undeniable, leading to its quiet discontinuation as an active timekeeping system, though it may have persisted as a theoretical concept for the End of Days.