October 21st, 1263 was a Sunday.
September 24th, 1263 - October 23rd, 1263
Why not celebrate an alternative birthday? In 407 days, exactly on September 6th, 2027, people who were born on October 21st, 1263 will be 279,000 days old!
Fixed holidays (Christian feast day) which are celebrated on October 21st.
| M = 1000 | C = 100 | L = 50 | X = 10 | I = 1 |
No: With 365 days 1263 is a normal year and no leap year.