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Within LTS Haskell 24.40 (ghc-9.10.3)
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fromGregorianValid :: Year -> MonthOfYear -> DayOfMonth -> Maybe Daytime Data.Time.Calendar Convert from proleptic Gregorian calendar. Invalid values will return Nothing
periodToDayValid :: DayPeriod p => p -> Int -> Maybe Daytime Data.Time.Calendar Validating inverse of periodFromDay.
fromJulianValid :: Year -> MonthOfYear -> DayOfMonth -> Maybe Daytime Data.Time.Calendar.Julian Convert from proleptic Julian calendar. Invalid values will return Nothing.
fromJulianYearAndDayValid :: Year -> DayOfYear -> Maybe Daytime Data.Time.Calendar.Julian Convert from proleptic Julian year and day format. Invalid day numbers will return Nothing
fromMonthDayValid :: Month -> DayOfMonth -> Maybe Daytime Data.Time.Calendar.Month No documentation available.
fromYearMonthValid :: Year -> MonthOfYear -> Maybe Monthtime Data.Time.Calendar.Month No documentation available.
monthAndDayToDayOfYearValid :: Bool -> MonthOfYear -> DayOfMonth -> Maybe DayOfYeartime Data.Time.Calendar.MonthDay Convert month and day in the Gregorian or Julian calendars to day of year. First arg is leap year flag.
fromMondayStartWeekValid :: Year -> WeekOfYear -> Int -> Maybe Daytime Data.Time.Calendar.OrdinalDate No documentation available.
fromOrdinalDateValid :: Year -> DayOfYear -> Maybe Daytime Data.Time.Calendar.OrdinalDate Convert from ISO 8601 Ordinal Date format. Invalid day numbers return Nothing
fromSundayStartWeekValid :: Year -> WeekOfYear -> Int -> Maybe Daytime Data.Time.Calendar.OrdinalDate No documentation available.