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时距 |
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.
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ChristmasDay | 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. |
| | 星期五 | The Class of all calendar Fridays. |
| | 星期一 | The Class of all calendar Mondays. |
| | 星期六 | The Class of all calendar Saturdays. |
| | 星期日 | The Class of all calendar Sundays. |
| | 星期四 | The Class of all calendar Thursdays. |
| | 星期二 | The Class of all calendar Tuesdays. |
| | 星期三 | The Class of all calendar Wednesdays. |