Relationships




Parents 
timeframe 
An interval of time. Note that a TimeInterval has both an extent and a location on the universal timeline. Note too that a TimeInterval has no gaps, i.e. this class contains only convex time intervals.

Children 
Christmas day  An instance of ChristmasDay is a ChristianHoliday on which observant members of Christianity celebrate the birth of Jesus of Nazareth. In both the Gregorian and Julian calendars, ChristmasDay falls on December 25th, but since the two calendars are currently off by 13 days, the ChristmasDays assigned by each correspond to different actual (sidereal, UTC) days. 
 Friday  The Class of all calendar Fridays. 
 Monday  The Class of all calendar Mondays. 
 Saturday  The Class of all calendar Saturdays. 
 Sunday  The Class of all calendar Sundays. 
 Thursday  The Class of all calendar Thursdays. 
 Tuesday  The Class of all calendar Tuesdays. 
 Wednesday  The Class of all calendar Wednesdays. 