September 8th, 1264 was a Monday.
August 24th, 1264 - September 23rd, 1264
Why not celebrate an alternative birthday? In 781 days, exactly on July 25th, 2028, people who were born on September 8th, 1264 will be 279,000 days old!
Fixed holidays (Christian Feast Day) which are celebrated on September 8th.
| M = 1000 | C = 100 | L = 50 | X = 10 | IX = 9 | V = 5 | IV = 4 | I = 1 |
Yes: 1264 is a leap year, therefore has a 29th of February with an additional leap day and a total of 366 days (instead of the usual 365 days in a normal year).