| dateFmt | Data.Time.Format, Data.Time |
| dateTimeFmt | Data.Time.Format, Data.Time |
| Day | Data.Time.Calendar.OrdinalDate, Data.Time.Calendar, Data.Time |
| dayAndTimeFormat | Data.Time.Format.ISO8601 |
| dayFractionToTimeOfDay | Data.Time.LocalTime, Data.Time |
| DayOfMonth | Data.Time.Calendar.MonthDay, Data.Time.Calendar.Julian, Data.Time.Calendar, Data.Time |
| DayOfQuarter | Data.Time.Calendar.Quarter |
| DayOfWeek | Data.Time.Calendar.WeekDate, Data.Time.Calendar, Data.Time |
| dayOfWeek | Data.Time.Calendar.WeekDate, Data.Time.Calendar, Data.Time |
| dayOfWeekDiff | Data.Time.Calendar, Data.Time |
| DayOfYear | Data.Time.Calendar.OrdinalDate, Data.Time.Calendar.MonthDay, Data.Time.Calendar.Julian |
| dayOfYearToMonthAndDay | Data.Time.Calendar.MonthDay |
| DayPeriod | Data.Time.Calendar, Data.Time |
| dayPeriod | Data.Time.Calendar, Data.Time |
| dayQuarter | Data.Time.Calendar.Quarter |
| daysAndTimeOfDayToTime | Data.Time.LocalTime, Data.Time |
| December | Data.Time.Calendar.MonthDay, Data.Time.Calendar.Julian, Data.Time.Calendar, Data.Time |
| defaultTimeLocale | Data.Time.Format, Data.Time |
| diffAbsoluteTime | Data.Time.Clock.TAI |
| diffDays | Data.Time.Calendar, Data.Time |
| diffGregorianDurationClip | Data.Time.Calendar, Data.Time |
| diffGregorianDurationRollOver | Data.Time.Calendar, Data.Time |
| diffJulianDurationClip | Data.Time.Calendar.Julian |
| diffJulianDurationRollOver | Data.Time.Calendar.Julian |
| diffLocalTime | Data.Time.LocalTime, Data.Time |
| diffMonths | Data.Time.Calendar.Month |
| diffQuarters | Data.Time.Calendar.Quarter |
| DiffTime | Data.Time.Clock, Data.Time |
| diffTimeToPicoseconds | Data.Time.Clock, Data.Time |
| diffUTCTime | Data.Time.Clock, Data.Time |
| durationDaysFormat | Data.Time.Format.ISO8601 |
| durationParseTimeSpecifier | Data.Time.Format.Internal |
| durationTimeFormat | Data.Time.Format.ISO8601 |