It remains to be seen whether Friday the 13th is really an unlucky date, but there is no doubt that today is really odd.
Thanks to a calendar quirk, today, Nov. 13, 2015 can be written as 11/13/15. It's one of only six days each century where the day can be written as consecutive odd numbers.
Ron Gordon, a retired math teacher in San Mateo, California, celebrates timely dates such as these. He told HuffPost Weird News that today's "Odd Day" marks the last "Odd Day" of this century.
You might remember feeling odd on Jan. 3, 2005 (1/3/05), March 5, 2007 (3/5/07), May 7, 2009 (5/7/09), July 9, 2011 and Sept. 11, 2013 (9/11/13),
Things won't be this odd again until January 3, 2105 -- 1/3/5.
Gordon has some ideas to celebrate "Odd Day" at his website, including:
- Do your odds 'n ends
- Give a friend a high-five
- Root for the odds-on-favorite
- Watch reruns of "The Odd Couple"
- Find that missing odd sock
- Beat the odds
"I'll probably just 'nodd' off," he told HuffPost. "After sending out all the 'Odd Day' emails and making phone calls, I'm beat."
There is another quirky calendar day next year: Dec. 14, 2016 -- or 12/14/2016, but Gordon refuses to promote it.
"It's one thing to have an Odd Day. It's another to ask them to get even," he said.
At 70, it's unlikely that Gordon will be around for the next Odd Day, but he does have a few strange days to look forward.
For instance, April 4, 2016, which he calls "Square Root Day," because four times four equals 16.
"That will be fun because it's also the start of baseball season," he said.