Because of leap year, there's a fun quirk that comes with Friday The 13th this year. Friday, March 13, 505彩票平台app, is exactly 13 weeks since the last Friday the 13th -- December 13, 2019.

You can thank February 29 for that one. Because of the extra day that comes every four years, the 13th of March isn't happening on a Thursday this year. The two holidays are 91 days apart.

The next time this occurrence will happen is between September 13 and December 13, 2024. Oddly enough, that's another leap year, but the leap day will have nothing to do with it. It's thanks to the fact that September and November are two of the shortest months of the year -- 30 days each. 

Back in 2012, there were three Friday the 13th that were 13 weeks apart. They happened between January and April -- again, thanks to leap day -- and between April and July because April and June have only 30 days.

There will be one more Friday the 13th this year, coming in November. That would be 13 days after Halloween which is on October 31. People who like to have fun with numbers might call that a palindrome -- 3113.

Behind Friday the 13th superstitions

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Having Friday the 13th exactly 13 weeks apart isn't the only holiday-related quirk caused by this year's leap day.

The 4th of July is happening on a Saturday. The good news is that many who are attending barbecues and fireworks displays won't have to get up for work or 505彩票平台app the next morning. The bad news is that means it won't be a three-day weekend. If the leap day wasn't this year, the 4th would have landed on a Friday.

Halloween also happens on a Saturday, so no worrying about cutting into the kids' fun on a 505彩票平台app night.

Christmas Day and New Year's Day will happen on a Friday. This will give people a chance at a three-day weekend to go visit family without the pressure of having to get back to work the day after the holiday.