December has five Saturdays, Sundays and Mondays this year. That’s unusual, as you might expect. Pointless and uninteresting, sure, but unusual. In fact, it was suggested on Facebook (yes, I’m railing on Facebook again today) that it only occurs once every 823 years. OK, that might push it past the border into Interestingland.
Except it’s not true. And when you think about it, it can’t be true.