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Doomsday for 2016 is Monday

January 4, 2016

Today, January 4, 2016, is January's "Doomsday" — and it's a Monday.

What does this mean?

Well, January's Doomsday is either the 3rd or the 4th, depending on whether it's a normal year (when it's the 3rd), or a leap year (when it's the 4th). So, because 2016 is a leap year, it's January 4th, and 2016's Doomsday day of the week is Monday.

This, of course, means that February 29, the last day of February, is also Monday.

If you recall, 2015's Doomsday was Saturday, and because 2016 is a leap year, Doomsday moves ahead two days instead of one.

But what does all this mean? What is a Doomsday, anyway?

For one thing, knowing Doomsday for 2016 tells you immediately that April 4th, June 6th, August 8th, October 10th, and December 12th are all on a Monday this year. Amazing, isn't it?

Check the Doomsday Algorithm page to find out why it's called "Doomsday" and to get complete details of how to do the Doomsday calculation for the day of the week for any date -- in your head!

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