Is this pair of dual-humped Bactrian camels heralding hump day? Nope, it"s not quite Wednesday yet—but you can double down on your celebratory mood this February 22, because Tuesday, 2/22/22 occurs just once every 400 years. So on this deuce of a day, beware of two-timers claiming they"ll pay you back next Twosday—you"ll be short your two bits until February 22, 2422.