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How does Hebcal calculate the holidays for the years before rosh hashanah postponements were in place?

MPP 2 years ago updated by rayoflight 1 year ago 5

When Hebcal calculates the holidays 1000 years ago or more, does Hebcal take into account the fact that postponement rules were only condified by Maimonides in the 12th century? So if I were to go to 160 BC, during the Maccabean revolt, would the calendar accurate predict when Sukkot and the first Hannukah fell?

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Recommend reading this book

Understanding the Jewish Calendar https://www.amazon.com/dp/0940118173/ref=cm_sw_r_cp_apa_i_GP0nCb46QSDFM

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First, thank you so much for your website. It's absolutely wonderful and I've used it for years and never stopped to say thanks.  But, I also would like to know how Hebcal calculates the holidays before the postponements came into effect, and if you use the calculated versus observable method today.  Specifically the years surrounding Yeshua's life, approximately 4-5 BC through 30-31 AD.  This would be most helpful.

I posted a similar question months ago. Hopefully they'll see it this time!

yes, I saw they’re non response and hoped a second request would get a response. 

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Answered

Recommend reading this book

Understanding the Jewish Calendar https://www.amazon.com/dp/0940118173/ref=cm_sw_r_cp_apa_i_GP0nCb46QSDFM

As much as I like your website (and you), I don't think sending me to Amazon to buy a book is an answer.  I think I understand all the Jewish calendars (celestial, observable and calculated), the postponements, and the problems with each.  I wanted to know how YOU determined the dates for Passover for the years just preceding and after the year zero.