October 15 – 1582 – Pope Gregory XIII implements the Gregorian calendar, replacing the older Julian calendar. In Italy, Poland, Portugal, and Spain, October 4 of this year is followed directly by October 15. So in those countries there was no October 5,6,7,8,9,10,11,12,13,14 1582. Scotland changed the beginning of the new year to January 1 […]
Read More...