October 20th, 1252 was a Sunday.
September 24th, 1252 - October 23rd, 1252
Why not celebrate an alternative birthday? In 389 days, exactly on August 19th, 2027, people who were born on October 20th, 1252 will be 283,000 days old!
Fixed holidays (Christian feast days) which are celebrated on October 20th.
| M = 1000 | C = 100 | L = 50 | X = 10 | I = 1 |
Yes: 1252 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).