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Within LTS Haskell 24.64 (ghc-9.10.3)

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1. periodFromDay :: DayPeriod p => Day -> (p, Int)

   time-compat	Data.Time.Calendar.Compat

   Get the period this day is in, with the 1-based day number within the period.

   periodFromDay (periodFirstDay p) = (p,1)
   

2. periodLastDay :: DayPeriod p => p -> Day

   time-compat	Data.Time.Calendar.Compat

   Returns the last Day in a period of days.

3. periodToDay :: DayPeriod p => p -> Int -> Day

   time-compat	Data.Time.Calendar.Compat

   Inverse of periodFromDay.

4. periodToDayValid :: DayPeriod p => p -> Int -> Maybe Day

   time-compat	Data.Time.Calendar.Compat

   Validating inverse of periodFromDay.

5. scaleCalendarDiffDays :: Integer -> CalendarDiffDays -> CalendarDiffDays

   time-compat	Data.Time.Calendar.Compat

   Scale by a factor. Note that scaleCalendarDiffDays (-1) will not perfectly invert a duration, due to variable month lengths.

6. toModifiedJulianDay :: Day -> Integer

   time-compat	Data.Time.Calendar.Compat

   No documentation available.

7. weekAllDays :: DayOfWeek -> Day -> [Day]

   time-compat	Data.Time.Calendar.Compat

   Returns a week containing the given Day where the first day is the DayOfWeek specified. Examples:

   >>> weekAllDays Sunday (YearMonthDay 2022 02 21)
   [YearMonthDay 2022 2 20 .. YearMonthDay 2022 2 26]
   

   >>> weekAllDays Monday (YearMonthDay 2022 02 21)
   [YearMonthDay 2022 2 21 .. YearMonthDay 2022 2 27]
   

   >>> weekAllDays Tuesday (YearMonthDay 2022 02 21)
   [YearMonthDay 2022 2 15 .. YearMonthDay 2022 2 21]
   

8. weekFirstDay :: DayOfWeek -> Day -> Day

   time-compat	Data.Time.Calendar.Compat

   Returns the first day of a week containing the given Day. Examples:

   >>> weekFirstDay Sunday (YearMonthDay 2022 02 21)
   YearMonthDay 2022 2 20
   

   >>> weekFirstDay Monday (YearMonthDay 2022 02 21)
   YearMonthDay 2022 2 21
   

   >>> weekFirstDay Tuesday (YearMonthDay 2022 02 21)
   YearMonthDay 2022 2 15
   

9. weekLastDay :: DayOfWeek -> Day -> Day

   time-compat	Data.Time.Calendar.Compat

   Returns the last day of a week containing the given Day. Examples:

   >>> weekLastDay Sunday (YearMonthDay 2022 02 21)
   YearMonthDay 2022 2 26
   

   >>> weekLastDay Monday (YearMonthDay 2022 02 21)
   YearMonthDay 2022 2 27
   

   >>> weekLastDay Tuesday (YearMonthDay 2022 02 21)
   YearMonthDay 2022 2 21
   

10. sundayAfter :: Day -> Day

    time-compat	Data.Time.Calendar.Easter.Compat

    The next Sunday strictly after a given day.

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