gregorian calendar :
- n the solar calendar now in general use, introduced by Gregory XIII in 1582 to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years; it was adopted by Great Britain and the American colonies in 1752
News & Articles
- Gilligans Gourmet
Most historians agree that April Fool's Day began when the Christian world adopted the new Gregorian calendar.
June 28, 2013 - Irish Central