May 13th (1787) was a Sunday. It's the 133rd day of the year (134th in leap years) in the Gregorian calendar. There are 232 days left to the end of the year.
Historical Events for 13th May, 1787
» Captain (Royal Navy) e.g Captain Arthur Phillip leaves Portsmouth, England, with eleven ships full of convicts (the "First Fleet") to establish a penal colony in Australia.