#Gregorian_calendar__New_Style  the solar calendar now in general use, introduced by Pope Gregory XIII in 1582 AD 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
  supertype:  solar_calendar__solarcalendar  a calendar based on solar cycles
  part:  January  February  March  April  May  June  July  August  September  October  November  December
  subtype:  church_calendar__ecclesiastical_calendar  a calendar of the Christian year indicating the dates of fasts and festivals

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