Index - D
| dateFmt | Data.Time.Format, Data.Time | 
| dateTimeFmt | Data.Time.Format, Data.Time | 
| Day | Data.Time.Calendar, Data.Time | 
| dayAndTimeFormat | Data.Time.Format.ISO8601 | 
| dayFractionToTimeOfDay | Data.Time.LocalTime, Data.Time | 
| DayOfWeek | Data.Time.Calendar, Data.Time | 
| dayOfWeek | Data.Time.Calendar, Data.Time | 
| dayOfYearToMonthAndDay | Data.Time.Calendar.MonthDay | 
| daysAndTimeOfDayToTime | Data.Time.LocalTime, 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 | 
| DiffTime | Data.Time.Clock, Data.Time | 
| diffTimeToPicoseconds | Data.Time.Clock, Data.Time | 
| diffUTCTime | Data.Time.Clock, Data.Time | 
| durationDaysFormat | Data.Time.Format.ISO8601 | 
| durationTimeFormat | Data.Time.Format.ISO8601 |