December 21st, 1012 was a Monday.
November 23rd, 1012 - December 21st, 1012
Why not celebrate an alternative birthday? In 806 days, exactly on September 25th, 2028, people who were born on December 21st, 1012 will be 371,000 days old!
Fixed holidays (Christian feast day, Earliest usual date for the winter solstice in the Northern Hemisphere and the summer solstice in the Southern Hemisphere, and its related observances) which are celebrated on December 21st.
| M = 1000 | X = 10 | I = 1 |
Yes: 1012 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).