Leap up early and enjoy a S.T.R.A.N.G.E. breakfast. There will be a few raffles drawn at 7:45 a.m. so folks who must can get work.
Wegman's
1056 East Lancaster Ave.
Downingtown, PA 19335
The Gregorian reform modified the Julian calendar's scheme of leap years as follows:
Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100, but these centurial years are leap years if they are exactly divisible by 400. For example, the years 1700, 1800, and 1900 are not leap years, but the year 2000 is.[6]
In addition to the change in the mean length of the calendar year from 365.25 days (365 days 6 hours) to 365.2425 days (365 days 5 hours 49 minutes 12 seconds), a reduction of 10 minutes 48 seconds per year, the Gregorian calendar reform also dealt with the accumulated difference between these lengths.
Source: Wikipedia
Wikipedia's source: Introduction to Calendars United States Naval Observatory.