May 13th, 1421 was a Sunday.
People born on May 13th, 1421 (assuming the person is still alive) would have turned 605 years old this year (2026).
April 21st, 1421 - May 21st, 1421
Why not celebrate an alternative birthday? In 987 days, exactly on March 6th, 2029, people who were born on May 13th, 1421 will be 222,000 days old!
Fixed holidays (Christian feast day) which are celebrated on May 13th.
| M = 1000 | CD = 400 | X = 10 | V = 5 | I = 1 |
No: With 365 days 1421 is a normal year and no leap year.