December 31st, 1108 was a Thursday.
December 22nd, 1108 - January 20th, 1109
Why not celebrate an alternative birthday? In 865 days, exactly on December 7th, 2028, people who were born on December 31st, 1108 will be 336,000 days old!
Fixed holidays (Christian feast day, New Year's Eve) which are celebrated on December 31st.
| M = 1000 | C = 100 | X = 10 | V = 5 | I = 1 |
Yes: 1108 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).