A leap year is when an extra day is added to our modern-day Gregorian calendar — the world’s most widely used calendar, named after Pope Gregory XIII — during the shortest month of the year.
Why was this so? Who decreed this ‘loss’? On October 5, 1582, Pope Gregory XIII (1502-85, reigned 1572-85) issued his papal bull Inter gravissimas (In the gravest concern) which modified and ...