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.

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

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.