December 20th, 1279 was a Wednesday.
November 23rd, 1279 - December 21st, 1279
Why not celebrate an alternative birthday? In 311 days, exactly on June 2nd, 2027, people who were born on December 20th, 1279 will be 273,000 days old!
Fixed holidays (Christian feast day, Earliest date for Winter solstice's eve) which are celebrated on December 20th.
| M = 1000 | C = 100 | L = 50 | X = 10 | IX = 9 | I = 1 |
No: With 365 days 1279 is a normal year and no leap year.