The Missing Passover

[Dawid]

Oh, and by the way, it would be entirely possible for the Qumranic Passover to come before the Passover celebrated by the rest of Judaism, since the 4Q325 and 4Q321 indicate that they were using a 364 day solar calendar, not a lunar calendar.
We can see even more calendrical diversity in second temple period Judaism if we look at the thoughts of Philo and the books of Enoch.

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The Essenes were Jewish and respectfully acknowledged as such during the second temple period Judaism. You are getting too hypothetical here with "it could be possible."

Wow. Seriously? This is ridiculous. I can tell you that it must have happened more than once in history that the Essene Passover came before the one of the rest of Judaism. It's mathematically impossible for it to have always come afterwards. You're really reaching now.