During my shul's annual *Tikun Leil Shavuot", I plan to give a short lecture about the "seasonal drift" affect of the Judaic calendar. See this Mi Yodeya answer for additional info.
I could use some additional help. The Wikipedia article gives an overview. Other articles that I have found delve into too much math for me to digest the full concept of what is really occurring. I need some balance between these two extremes, by seeing visibly, how this works. Ideally, I'd like one of these options, if they exist:
- The exact year that the current Hebrew (fixed) calendar occurred
- An online interface where I can enter a Hebrew year and it would display the corresponding Gregorian dates of the Hebrew holidays, particularly the Gregorian date of Passover. What I'm trying to discover is at what points Passover becomes too early to necessitate a Judaic leap year. Recall, that currently, years 8 and 19 in the cycle push Passover to be "later" than needed (i.e, w/o the leap year that year Passover would still be after the equinox.)
- In lieu of an online interface, if there is computer code that I can easily compile (preferably Visual Basic), this may work for me as well.
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