December 20th, 1001 was a Sunday.
November 23rd, 1001 - December 21st, 1001
Why not celebrate an alternative birthday? In 773 days, exactly on September 6th, 2028, people who were born on December 20th, 1001 will be 375,000 days old!
Fixed holidays (Christian feast day, Earliest date for Winter solstice's eve) which are celebrated on December 20th.
| M = 1000 | X = 10 | I = 1 |
No: With 365 days 1001 is a normal year and no leap year.