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Tuesday, December 14, 2010

Some Calendar Stuff

R' Ari Enkin at Hirhurim tells us that we hadn't had a Friday 10th of Tevet in 10 years (5761).  He mentions the years that we will next be commemorating Asara BeTevet on a Friday as being: 5771, 5774, 5781, 5784, 5785, 5795, 5798.

There is another rare occurrance that happens about the same time of year: i.e. A Shabbat Parshat Miketz that does NOT fall out on Hanukka.  This too last happened 10 years ago (5761), and this will not happen again for another 10 years (5781).  5781 is on the list for a Friday Asara BeTevet. 

So, I was wondering if the list of Shabbat Parshat Mikketz not falling on Hanukka is a subset of the list of Friday Asara BeTevets. This theory seems to be correct. See the table below.

May we soon not have to fast on Asara BeTevet any longer.

YearAsara BeTevet FridayShabbat Parshat Miketz NOT on Hanukka
5757YesYes
5758NoNo
5759NoNo
5760NoNo
5761YesYes
5762NoNo
5763NoNo
5764NoNo
5765NoNo
5766NoNo
5767NoNo
5768NoNo
5769NoNo
5770NoNo
5771YesNo
5772NoNo
5773NoNo
5774YesNo
5775NoNo
5776NoNo
5777NoNo
5778NoNo
5779NoNo
5780NoNo
5781YesYes
5782NoNo
5783NoNo
5784YesYes
5785YesNo
5786NoNo
5787NoNo
5788NoNo
5789NoNo
5790NoNo
5791NoNo
5792NoNo
5793NoNo
5794NoNo
5795YesNo
5796NoNo
5797NoNo
5798YesNo
5798NoNo
5799NoNo
5800NoNo
5801YesYes

1 Comments:

At Mon Dec 20, 01:58:00 AM 2010, Anonymous Anonymous said...

Very nice.

Another special calendar occasion this month, is a lunar eclipse coinciding with the winter solstice. This happened last time centuries ago, in the winter of 1638 (December 1637). Very rare indeed.

see here for more information...

 

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