December 21, 2012 and Other Rare Calendar Dates

Abstract

Mayan calendar (1)

: Fans of rare calendar dates may not have the chance to experience another 12/12/12 (the next occurrence is on Dec. 12, 2112). However, they can look forward to these upcoming calendar rarities.

Fans of rare calendar dates may not have the chance to experience another 12/12/12 (the next occurrence is on Dec. 12, 2112). However, they can look forward to these upcoming calendar rarities.

12/21/12

Some people have circled Dec. 21, 2012 on their calendars because they think the world will come to an end on that day. However, believers in the Mayan Apocalypse should not be the only ones excited about the upcoming date. Dec. 21, 2012 is a rare case in which the month, day, and last two digits of the year are transpositions of each other. This pattern only occurs five times every hundred years (11/11/11 does not count). Calendar lovers will not get another chance to experience this phenomenon again until Jan. 10, 2101.

11/12/13

A date containing consecutive numbers does not appear on the calendar very often. In fact, it will only occur twice more in this century. Take a moment now and mark Nov. 12, 2013 and Dec. 13, 2014 on your smartphone calendars.

07/07/14

Assuming they survive the Mayan Apocalypse, most people will not plan any special parties on July 7, 2014. However, the coming date should be a cause for celebration. Only 12 times in a century will the calendar date represent the sum of a number counted twice (7 + 7 = 14). Luckily for most calendar followers, several of these quirks will occur over the next few years (08/08/16, 09/09/18, 10/10/20, 11/11/22, and 12/12/24).

04/04/16

For calendar aficionados, April 4, 2016 is another big day. That is when a number (the month) multiplied by itself yields the year. Thanks to Oct. 10, November 11, and Dec. 12 (which result in numbers larger than 99), this is one of the rarest calendar anomalies of them all. It only occurs twelve times per millennia.

11/11/2111

If you are still alive on Nov. 11, 2111, you will want to jump for joy. You will likely not live long enough to witness another date with so many ones in it. The only other date to include more ones was Nov. 11, 1111. The calendar quirk will not come again until Nov. 11, 3111.

1. Photographer: Truthanado
    Title/Description: Mayan calendar created by a modern craftsman
    Date: August 4, 2008
    Location/Permission: Wikimedia - Author's note (click on the title/link for photo/credits/permission).

#calendar #dates #Maya #beliefs #rarities #rare

-- Anthony Hopper