# For 2020, Doomsday is Saturday

**URL:** <https://boards.straightdope.com/t/for-2020-doomsday-is-saturday/845750>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [January 1, 2020, 9:44pm UTC](https://boards.straightdope.com/t/for-2020-doomsday-is-saturday/845750 "2020-01-01T21:44:32Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![K364](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/k364/32/5_2.png) [@K364](https://boards.straightdope.com/u/K364)\
**Post date:** [January 1, 2020, 9:44pm UTC](https://boards.straightdope.com/t/for-2020-doomsday-is-saturday/845750/1 "2020-01-01T21:44:32Z")

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The Doomsday Rule determines the day of the week for a given date. Details are here: [https://en.wikipedia.org/wiki/Doomsday\_rule](https://en.wikipedia.org/wiki/Doomsday_rule)

So, here goes:

The last day of February (the 29th) is a Saturday

For the even months,  
April 4  
June 6  
August 8  
October 10  
December 12, are all Saturdays (4/4, 6/6, 8/8, 10/10, 12/12)

For the odd months, remember “working 9 to 5 at the 7/11”  
May 9  
September 5  
July 11  
November 7, are all Saturdays. (5/9, 9/5, 7/11, 11/7)

Normally Jan 31 is the Doomsday but 2020 is a Leap Year, so Jan 32 (yes) is a Saturday. Or for 2020, Jan 4.

Similarly, March 0 is Saturday

Other notable dates that are Doomsdays:  
July 4, Boxing Day, Halloween, Pi Day (March 14)

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**Author:** ![jz78817](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/jz78817/32/1028_2.png) [@jz78817](https://boards.straightdope.com/u/jz78817)\
**Post date:** [January 1, 2020, 10:24pm UTC](https://boards.straightdope.com/t/for-2020-doomsday-is-saturday/845750/2 "2020-01-01T22:24:21Z")

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good, I hate waiting around.

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**Author:** ![Kent\_Clark](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kent_clark/32/105_2.png) [@Kent\_Clark](https://boards.straightdope.com/u/Kent_Clark)\
**Post date:** [January 1, 2020, 10:45pm UTC](https://boards.straightdope.com/t/for-2020-doomsday-is-saturday/845750/3 "2020-01-01T22:45:41Z")

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Great. I no longer have to waste time looking at a calendar.

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**Author:** ![RioRico](https://avatars.discourse-cdn.com/v4/letter/r/f04885/32.png) [@RioRico](https://boards.straightdope.com/u/RioRico)\
**Post date:** [January 2, 2020, 2:29am UTC](https://boards.straightdope.com/t/for-2020-doomsday-is-saturday/845750/4 "2020-01-02T02:29:24Z")

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## I deeply respect Conway for The Game Of Life. But “Doomsday” implies something more than a calendar trick. I want REAL fucking DOOM, dammit! And not the old game on so many levels. No, we need a solid calculation of TEOTWAWKI (\*) else we’re merely mentally masturbating. Give me doomsday or give me life!

(\*) The end of THIS world is sufficient. We needn’t extend to the galaxy or universe. Gotta have limits.

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**Author:** ![Guest-starring\_Id](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/guest-starring_id/32/21736_2.png) [@Guest-starring\_Id](https://boards.straightdope.com/u/Guest-starring_Id)\
**Post date:** [January 2, 2020, 3:02am UTC](https://boards.straightdope.com/t/for-2020-doomsday-is-saturday/845750/5 "2020-01-02T03:02:33Z")

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Heh - silly me - and here I was thinking it’ll be Nov. 3.