Exercise:
When the Gregorian calendar was
introduced in 1582,
the accumulated error in the Julian calendar
was 10 days.
What was the error by the time the Gregorian
calendar was adopted in Turkey, in 1927?
1600 was a leap-year in both
calendars,
but 1700, 1800 and 1900 were not leap-years in the
Gregorian calendar.
Thus the Julian calendar was 13 days adrift,
by 1927.
Back to "calendars".