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Language  Haskell2010 
Synopsis
 newtype Day = ModifiedJulianDay {}
 addDays :: Integer > Day > Day
 diffDays :: Day > Day > Integer
 class Ord p => DayPeriod p where
 periodFirstDay :: p > Day
 periodLastDay :: p > Day
 dayPeriod :: Day > p
 periodAllDays :: DayPeriod p => p > [Day]
 periodLength :: DayPeriod p => p > Int
 periodFromDay :: DayPeriod p => Day > (p, Int)
 periodToDay :: DayPeriod p => p > Int > Day
 periodToDayValid :: DayPeriod p => p > Int > Maybe Day
 data CalendarDiffDays = CalendarDiffDays {}
 calendarDay :: CalendarDiffDays
 calendarWeek :: CalendarDiffDays
 calendarMonth :: CalendarDiffDays
 calendarYear :: CalendarDiffDays
 scaleCalendarDiffDays :: Integer > CalendarDiffDays > CalendarDiffDays
 type Year = Integer
 pattern CommonEra :: Integer > Year
 pattern BeforeCommonEra :: Integer > Year
 type MonthOfYear = Int
 pattern January :: MonthOfYear
 pattern February :: MonthOfYear
 pattern March :: MonthOfYear
 pattern April :: MonthOfYear
 pattern May :: MonthOfYear
 pattern June :: MonthOfYear
 pattern July :: MonthOfYear
 pattern August :: MonthOfYear
 pattern September :: MonthOfYear
 pattern October :: MonthOfYear
 pattern November :: MonthOfYear
 pattern December :: MonthOfYear
 type DayOfMonth = Int
 toGregorian :: Day > (Year, MonthOfYear, DayOfMonth)
 fromGregorian :: Year > MonthOfYear > DayOfMonth > Day
 pattern YearMonthDay :: Year > MonthOfYear > DayOfMonth > Day
 fromGregorianValid :: Year > MonthOfYear > DayOfMonth > Maybe Day
 showGregorian :: Day > String
 gregorianMonthLength :: Year > MonthOfYear > DayOfMonth
 addGregorianMonthsClip :: Integer > Day > Day
 addGregorianMonthsRollOver :: Integer > Day > Day
 addGregorianYearsClip :: Integer > Day > Day
 addGregorianYearsRollOver :: Integer > Day > Day
 addGregorianDurationClip :: CalendarDiffDays > Day > Day
 addGregorianDurationRollOver :: CalendarDiffDays > Day > Day
 diffGregorianDurationClip :: Day > Day > CalendarDiffDays
 diffGregorianDurationRollOver :: Day > Day > CalendarDiffDays
 isLeapYear :: Year > Bool
 data DayOfWeek
 dayOfWeek :: Day > DayOfWeek
 dayOfWeekDiff :: DayOfWeek > DayOfWeek > Int
 firstDayOfWeekOnAfter :: DayOfWeek > Day > Day
 weekAllDays :: DayOfWeek > Day > [Day]
 weekFirstDay :: DayOfWeek > Day > Day
 weekLastDay :: DayOfWeek > Day > Day
Days
The Modified Julian Day is a standard count of days, with zero being the day 18581117.
Instances
Enum Day Source #  
Eq Day Source #  
Data Day Source #  
Defined in Data.Time.Calendar.Days gfoldl :: (forall d b. Data d => c (d > b) > d > c b) > (forall g. g > c g) > Day > c Day # gunfold :: (forall b r. Data b => c (b > r) > c r) > (forall r. r > c r) > Constr > c Day # dataTypeOf :: Day > DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) > Maybe (c Day) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) > Maybe (c Day) # gmapT :: (forall b. Data b => b > b) > Day > Day # gmapQl :: (r > r' > r) > r > (forall d. Data d => d > r') > Day > r # gmapQr :: forall r r'. (r' > r > r) > r > (forall d. Data d => d > r') > Day > r # gmapQ :: (forall d. Data d => d > u) > Day > [u] # gmapQi :: Int > (forall d. Data d => d > u) > Day > u # gmapM :: Monad m => (forall d. Data d => d > m d) > Day > m Day # gmapMp :: MonadPlus m => (forall d. Data d => d > m d) > Day > m Day # gmapMo :: MonadPlus m => (forall d. Data d => d > m d) > Day > m Day #  
Ord Day Source #  
Read Day Source #  
Show Day Source #  
Ix Day Source #  
NFData Day Source #  
Defined in Data.Time.Calendar.Days  
DayPeriod Day Source #  
ParseTime Day Source #  
Defined in Data.Time.Format.Parse.Instances substituteTimeSpecifier :: Proxy Day > TimeLocale > Char > Maybe String Source # parseTimeSpecifier :: Proxy Day > TimeLocale > Maybe ParseNumericPadding > Char > ReadP String Source # buildTime :: TimeLocale > [(Char, String)] > Maybe Day Source #  
FormatTime Day Source #  
Defined in Data.Time.Format.Format.Instances formatCharacter :: Bool > Char > Maybe (FormatOptions > Day > String) Source #  
ISO8601 Day Source # 

Defined in Data.Time.Format.ISO8601 
DayPeriod
class Ord p => DayPeriod p where Source #
The class of types which can be represented as a period of days.
Since: 1.12.1
periodFirstDay :: p > Day Source #
Returns the first Day
in a period of days.
periodLastDay :: p > Day Source #
Returns the last Day
in a period of days.
dayPeriod :: Day > p Source #
Get the period this day is in.
periodAllDays :: DayPeriod p => p > [Day] Source #
A list of all the days in this period.
Since: 1.12.1
periodLength :: DayPeriod p => p > Int Source #
The number of days in this period.
Since: 1.12.1
periodFromDay :: DayPeriod p => Day > (p, Int) Source #
Get the period this day is in, with the 1based day number within the period.
periodFromDay (periodFirstDay p) = (p,1)
Since: 1.12.1
periodToDay :: DayPeriod p => p > Int > Day Source #
Inverse of periodFromDay
.
Since: 1.12.1
periodToDayValid :: DayPeriod p => p > Int > Maybe Day Source #
Validating inverse of periodFromDay
.
Since: 1.12.1
Calendar Duration
data CalendarDiffDays Source #
Instances
scaleCalendarDiffDays :: Integer > CalendarDiffDays > CalendarDiffDays Source #
Scale by a factor. Note that scaleCalendarDiffDays (1)
will not perfectly invert a duration, due to variable month lengths.
Year, month and day
pattern BeforeCommonEra :: Integer > Year Source #
Also known as Before Christ.
Note that Year 1 = 1 CE, and the previous Year 0 = 1 BCE.
CommonEra
and BeforeCommonEra
form a COMPLETE
set.
type MonthOfYear = Int Source #
Month of year, in range 1 (January) to 12 (December).
pattern January :: MonthOfYear Source #
pattern February :: MonthOfYear Source #
pattern March :: MonthOfYear Source #
pattern April :: MonthOfYear Source #
pattern May :: MonthOfYear Source #
pattern June :: MonthOfYear Source #
pattern July :: MonthOfYear Source #
pattern August :: MonthOfYear Source #
pattern September :: MonthOfYear Source #
pattern October :: MonthOfYear Source #
pattern November :: MonthOfYear Source #
pattern December :: MonthOfYear Source #
The twelve MonthOfYear
patterns form a COMPLETE
set.
type DayOfMonth = Int Source #
Day of month, in range 1 to 31.
Gregorian calendar
toGregorian :: Day > (Year, MonthOfYear, DayOfMonth) Source #
Convert to proleptic Gregorian calendar.
fromGregorian :: Year > MonthOfYear > DayOfMonth > Day Source #
Convert from proleptic Gregorian calendar. Invalid values will be clipped to the correct range, month first, then day.
pattern YearMonthDay :: Year > MonthOfYear > DayOfMonth > Day Source #
Bidirectional abstract constructor for the proleptic Gregorian calendar. Invalid values will be clipped to the correct range, month first, then day.
fromGregorianValid :: Year > MonthOfYear > DayOfMonth > Maybe Day Source #
Convert from proleptic Gregorian calendar. Invalid values will return Nothing
showGregorian :: Day > String Source #
Show in ISO 8601 format (yyyymmdd)
gregorianMonthLength :: Year > MonthOfYear > DayOfMonth Source #
The number of days in a given month according to the proleptic Gregorian calendar.
addGregorianMonthsClip :: Integer > Day > Day Source #
Add months, with days past the last day of the month clipped to the last day. For instance, 20050130 + 1 month = 20050228.
addGregorianMonthsRollOver :: Integer > Day > Day Source #
Add months, with days past the last day of the month rolling over to the next month. For instance, 20050130 + 1 month = 20050302.
addGregorianYearsClip :: Integer > Day > Day Source #
Add years, matching month and day, with Feb 29th clipped to Feb 28th if necessary. For instance, 20040229 + 2 years = 20060228.
addGregorianYearsRollOver :: Integer > Day > Day Source #
Add years, matching month and day, with Feb 29th rolled over to Mar 1st if necessary. For instance, 20040229 + 2 years = 20060301.
addGregorianDurationClip :: CalendarDiffDays > Day > Day Source #
Add months (clipped to last day), then add days
addGregorianDurationRollOver :: CalendarDiffDays > Day > Day Source #
Add months (rolling over to next month), then add days
diffGregorianDurationClip :: Day > Day > CalendarDiffDays Source #
Calendrical difference, with as many whole months as possible
diffGregorianDurationRollOver :: Day > Day > CalendarDiffDays Source #
Calendrical difference, with as many whole months as possible.
Same as diffGregorianDurationClip
for positive durations.
isLeapYear :: Year > Bool Source #
Is this year a leap year according to the proleptic Gregorian calendar?
Week
Instances
dayOfWeekDiff :: DayOfWeek > DayOfWeek > Int Source #
dayOfWeekDiff a b = a  b
in range 0 to 6.
The number of days from b to the next a.
weekAllDays :: DayOfWeek > Day > [Day] Source #
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]
Since: 1.12.2
weekFirstDay :: DayOfWeek > Day > Day Source #
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
Since: 1.12.2
weekLastDay :: DayOfWeek > Day > Day Source #
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
Since: 1.12.2