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| TimePosition | 79 | Any TimePoint or TimeInterval along the universal timeline from NegativeInfinity to Positiv... | ^ |
| TimeInterval | 71 | An interval of time. Note that a TimeInterval has both an extent and a location on the universal ... | ^ |
| HarmattanSeason | . | HarmattanSeason is a season in West Africa that occurs between the end of November and the middle... | ^ |
| BreakfastTime | . | BreakfastTime is the time interval by which the first meal of the day is typically eaten, which i... | ^ |
| LunchTime | . | LunchTime is the time interval by which lunch, or the mid_day meal, is typically eaten, which is ... | ^ |
| DinnerTime | . | DinnerTime is the time interval by which dinner, or the evening meal, is typically eaten, which i... | ^ |
| Ramadan | . | Ramadan is the ninth month of the Islamic calendar. It is the Islamic month of fasting, in which pa... | ^ |
| DhuAlHijjah | . | Dhu al_Hijja is the twelfth and final month in the Islamic Calendar. It is also known as Thw al_Hij... | ^ |
| Holiday | 18 | Holiday is the class of time periods that are observed as holidays in a country, culture, or reli... | ^ |
| AnteMeridiem | . | The class of TimeIntervals that begin at midnight and end at noon. | ^ |
| PostMeridiem | . | The class of TimeIntervals that begin at noon and end at midnight. | ^ |
| Weekend | . | Any Saturday and Sunday which are contiguous. | ^ |
| SeasonOfYear | 4 | SeasonOfYear is the class of four seasons correlated with the calendar Year and associated with... | ^ |
| Year | 1 | The Class of all calendar Years. | ^ |
| Decade | . | The Class of all calendar Decades. | ^ |
| DayTime | 2 | The class of TimeIntervals that begin at Sunrise and end at Sunset. | ^ |
| Sunrise | . | The TimeInterval of each Day when the sun is rising and is partially overlapped by the horizon ... | ^ |
| Sunset | . | The TimeInterval of each Day when the sun is setting and is partially overlapped by the horizon... | ^ |
| NightTime | 1 | The class of TimeIntervals that begin at Sunset and end at Sunrise. | ^ |
| QuarterYear | . | A period of three months. | ^ |
| Month | 12 | The Class of all calendar Months. | ^ |
| Day | 14 | The Class of all calendar Days. | ^ |
| Week | . | The Class of all calendar weeks. | ^ |
| Hour | . | The Class of all clock Hours. | ^ |
| Minute | . | The Class of all clock Minutes. | ^ |
| Second | . | The Class of all clock Seconds. | ^ |
Relation: