Approximately every 19 years, but it’s often off by a day in either direction due to leap years.
Unless those 19 years encompass 1582, because then it will be off by 9 days.
Menu
Approximately every 19 years, but it’s often off by a day in either direction due to leap years.
Unless those 19 years encompass 1582, because then it will be off by 9 days.