December 5th, 1260 was a Sunday.
November 23rd, 1260 - December 21st, 1260
Why not celebrate an alternative birthday? In 357 days, exactly on July 18th, 2027, people who were born on December 5th, 1260 will be 280,000 days old!
Fixed holidays (Christian feast day, Saint Nicholas' Eve) which are celebrated on December 5th.
| M = 1000 | C = 100 | L = 50 | X = 10 | V = 5 | I = 1 |
Yes: 1260 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).