Historical Events
Gregory Conquers Julius Caesar
Oct 4 Last Julian calendar day in Spain, Portugal and pontifical states. To sync to the Gregorian calendar, 10 days are skipped and the next date is Oct 15.
- Oct 15 Gregorian calendar introduced in Spain, Portugal and pontifical states, after skipping 10 days from October 4 to sync the calendar to the solar year and compensate for the drift that had occurred due to the Julian calendar having too many leap days
Famous Birthdays
Famous Deaths
- Oct 4 Theresia van Avila, Spanish mystic writer, dies