Two for Twosday

This pair of dual-humped Bactrian camels are doubling down to celebrate today - 22 February, because 22/2/22 only occurs on a Tuesday a couple of times per millennium. (Every 400 years, to be exact.) So, on this day of twos, beware of those who claim they'll pay you back next Twosday - it won’t come around again until 22 February, 2422.
© Nurlan Kulcha/Alamy