16th May is Purple Day. You're supposed to wear purple on this day.
An Austrian scientist has discovered that if women share a bed with someone, they sleep better. The same does not happen for men though.
19th September is International Talk Like A Pirate Day.
19th September is also Purple Wow Day.
You cannot buy only one Alpaca. They like you to buy 2 or even 3 because they're very sociable creatures, apparently.
Over half the women in the UK experience reproductive health problems.
For more random days, check out this website: http://hidates.com/