Wednesday, April 6, 2011

Ancient Jewish Computers


In perfecting Judaism’s complex, lunisolar calendar,
the Rabbis likely relied on advanced mathematics.
Tuesday, April 5, 2011
Passover, the Bible tells us (Exodus 34:18), is Hag Hamatzot (Holiday of The Matzot) whose time is Mo’ed HaAviv, a spring festival, that begins on the 15th day of Nisan, on the night of a full moon after the vernal equinox (“Tekufat HaShana”), following the Passover sacrifice on the 14th. 
A computer nerd, I have always been fascinated by the Jewish calendar, perfected about 1,650 years ago, and I've always wondered how such complex calculations could be accomplished in the pre-computer age. 
I've recently discovered how, and it's a fascinating story.



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