Data.Time.LocalTime

Time zones

data TimeZone

A TimeZone is a whole number of minutes offset from UTC, together with a name and a "just for summer" flag.

Constructors

TimeZone

Fields

• timeZoneMinutes :: Int

  The number of minutes offset from UTC. Positive means local time will be later in the day than UTC.

• timeZoneSummerOnly :: Bool

  Is this time zone just persisting for the summer?

• timeZoneName :: String

  The name of the zone, typically a three- or four-letter acronym.

Instances

Eq TimeZone

Defined in Data.Time.LocalTime.Internal.TimeZone

Methods

(==) :: TimeZone -> TimeZone -> Bool

(/=) :: TimeZone -> TimeZone -> Bool

Data TimeZone

Defined in Data.Time.LocalTime.Internal.TimeZone

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> TimeZone -> c TimeZone

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c TimeZone

toConstr :: TimeZone -> Constr

dataTypeOf :: TimeZone -> DataType

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c TimeZone)

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c TimeZone)

gmapT :: (forall b. Data b => b -> b) -> TimeZone -> TimeZone

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> TimeZone -> r

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> TimeZone -> r

gmapQ :: (forall d. Data d => d -> u) -> TimeZone -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> TimeZone -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> TimeZone -> m TimeZone

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> TimeZone -> m TimeZone

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> TimeZone -> m TimeZone

Ord TimeZone

Defined in Data.Time.LocalTime.Internal.TimeZone

Methods

compare :: TimeZone -> TimeZone -> Ordering

(<) :: TimeZone -> TimeZone -> Bool

(<=) :: TimeZone -> TimeZone -> Bool

(>) :: TimeZone -> TimeZone -> Bool

(>=) :: TimeZone -> TimeZone -> Bool

max :: TimeZone -> TimeZone -> TimeZone

min :: TimeZone -> TimeZone -> TimeZone

Read TimeZone

This only works for ±HHMM format, single-letter military time-zones, and these time-zones: "UTC", "UT", "GMT", "EST", "EDT", "CST", "CDT", "MST", "MDT", "PST", "PDT".

Defined in Data.Time.Format.Parse

Methods

readsPrec :: Int -> ReadS TimeZone

readList :: ReadS [TimeZone]

readPrec :: ReadPrec TimeZone

readListPrec :: ReadPrec [TimeZone]

Show TimeZone

This only shows the time zone name, or offset if the name is empty.

Defined in Data.Time.LocalTime.Internal.TimeZone

Methods

showsPrec :: Int -> TimeZone -> ShowS

show :: TimeZone -> String

showList :: [TimeZone] -> ShowS

NFData TimeZone

Defined in Data.Time.LocalTime.Internal.TimeZone

Methods

rnf :: TimeZone -> ()

ParseTime TimeZone

Defined in Data.Time.Format.Parse.Instances

Methods

substituteTimeSpecifier :: Proxy TimeZone -> TimeLocale -> Char -> Maybe String

parseTimeSpecifier :: Proxy TimeZone -> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String

buildTime :: TimeLocale -> [(Char, String)] -> Maybe TimeZone

FormatTime TimeZone

Defined in Data.Time.Format.Format.Instances

Methods

formatCharacter :: Bool -> Char -> Maybe (FormatOptions -> TimeZone -> String)

ISO8601 TimeZone

±hh:mm (ISO 8601:2004(E) sec. 4.2.5.1 extended format)

Defined in Data.Time.Format.ISO8601

Methods

iso8601Format :: Format TimeZone

timeZoneOffsetString :: TimeZone -> String

Text representing the offset of this timezone, such as "-0800" or "+0400" (like %z in formatTime).

timeZoneOffsetString' :: Maybe Char -> TimeZone -> String

Text representing the offset of this timezone, such as "-0800" or "+0400" (like %z in formatTime), with arbitrary padding.

minutesToTimeZone :: Int -> TimeZone

Create a nameless non-summer timezone for this number of minutes.

hoursToTimeZone :: Int -> TimeZone

Create a nameless non-summer timezone for this number of hours.

utc :: TimeZone

The UTC time zone.

getTimeZone :: UTCTime -> IO TimeZone

Get the local time-zone for a given time (varying as per summertime adjustments).

getCurrentTimeZone :: IO TimeZone

Get the current time-zone.

Time of day

data TimeOfDay

Time of day as represented in hour, minute and second (with picoseconds), typically used to express local time of day.

Constructors

TimeOfDay

Fields

• todHour :: Int

  range 0 - 23

• todMin :: Int

  range 0 - 59

• todSec :: Pico

  Note that 0 <= todSec < 61, accomodating leap seconds. Any local minute may have a leap second, since leap seconds happen in all zones simultaneously

Instances

Eq TimeOfDay

Defined in Data.Time.LocalTime.Internal.TimeOfDay

Methods

(==) :: TimeOfDay -> TimeOfDay -> Bool

(/=) :: TimeOfDay -> TimeOfDay -> Bool

Data TimeOfDay

Defined in Data.Time.LocalTime.Internal.TimeOfDay

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> TimeOfDay -> c TimeOfDay

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c TimeOfDay

toConstr :: TimeOfDay -> Constr

dataTypeOf :: TimeOfDay -> DataType

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c TimeOfDay)

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c TimeOfDay)

gmapT :: (forall b. Data b => b -> b) -> TimeOfDay -> TimeOfDay

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> TimeOfDay -> r

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> TimeOfDay -> r

gmapQ :: (forall d. Data d => d -> u) -> TimeOfDay -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> TimeOfDay -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> TimeOfDay -> m TimeOfDay

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> TimeOfDay -> m TimeOfDay

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> TimeOfDay -> m TimeOfDay

Ord TimeOfDay

Defined in Data.Time.LocalTime.Internal.TimeOfDay

Methods

compare :: TimeOfDay -> TimeOfDay -> Ordering

(<) :: TimeOfDay -> TimeOfDay -> Bool

(<=) :: TimeOfDay -> TimeOfDay -> Bool

(>) :: TimeOfDay -> TimeOfDay -> Bool

(>=) :: TimeOfDay -> TimeOfDay -> Bool

max :: TimeOfDay -> TimeOfDay -> TimeOfDay

min :: TimeOfDay -> TimeOfDay -> TimeOfDay

Read TimeOfDay

Defined in Data.Time.Format.Parse

Methods

readsPrec :: Int -> ReadS TimeOfDay

readList :: ReadS [TimeOfDay]

readPrec :: ReadPrec TimeOfDay

readListPrec :: ReadPrec [TimeOfDay]

Show TimeOfDay

Defined in Data.Time.LocalTime.Internal.TimeOfDay

Methods

showsPrec :: Int -> TimeOfDay -> ShowS

show :: TimeOfDay -> String

showList :: [TimeOfDay] -> ShowS

NFData TimeOfDay

Defined in Data.Time.LocalTime.Internal.TimeOfDay

Methods

rnf :: TimeOfDay -> ()

ParseTime TimeOfDay

Defined in Data.Time.Format.Parse.Instances

Methods

substituteTimeSpecifier :: Proxy TimeOfDay -> TimeLocale -> Char -> Maybe String

parseTimeSpecifier :: Proxy TimeOfDay -> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String

buildTime :: TimeLocale -> [(Char, String)] -> Maybe TimeOfDay

FormatTime TimeOfDay

Defined in Data.Time.Format.Format.Instances

Methods

formatCharacter :: Bool -> Char -> Maybe (FormatOptions -> TimeOfDay -> String)

ISO8601 TimeOfDay

hh:mm:ss[.sss] (ISO 8601:2004(E) sec. 4.2.2.2, 4.2.2.4(a) extended format)

Defined in Data.Time.Format.ISO8601

Methods

iso8601Format :: Format TimeOfDay

midnight :: TimeOfDay

Hour zero

midday :: TimeOfDay

Hour twelve

makeTimeOfDayValid :: Int -> Int -> Pico -> Maybe TimeOfDay

timeToDaysAndTimeOfDay :: NominalDiffTime -> (Integer, TimeOfDay)

Convert a period of time into a count of days and a time of day since midnight. The time of day will never have a leap second.

daysAndTimeOfDayToTime :: Integer -> TimeOfDay -> NominalDiffTime

Convert a count of days and a time of day since midnight into a period of time.

utcToLocalTimeOfDay :: TimeZone -> TimeOfDay -> (Integer, TimeOfDay)

Convert a time of day in UTC to a time of day in some timezone, together with a day adjustment.

localToUTCTimeOfDay :: TimeZone -> TimeOfDay -> (Integer, TimeOfDay)

Convert a time of day in some timezone to a time of day in UTC, together with a day adjustment.

timeToTimeOfDay :: DiffTime -> TimeOfDay

Get the time of day given a time since midnight. Time more than 24h will be converted to leap-seconds.

pastMidnight :: DiffTime -> TimeOfDay

Same as timeToTimeOfDay.

timeOfDayToTime :: TimeOfDay -> DiffTime

Get the time since midnight for a given time of day.

sinceMidnight :: TimeOfDay -> DiffTime

Same as timeOfDayToTime.

dayFractionToTimeOfDay :: Rational -> TimeOfDay

Get the time of day given the fraction of a day since midnight.

timeOfDayToDayFraction :: TimeOfDay -> Rational

Get the fraction of a day since midnight given a time of day.

Calendar Duration

data CalendarDiffTime

Constructors

CalendarDiffTime

Fields

• ctMonths :: Integer
• ctTime :: NominalDiffTime

Instances

Eq CalendarDiffTime

Defined in Data.Time.LocalTime.Internal.CalendarDiffTime

Methods

(==) :: CalendarDiffTime -> CalendarDiffTime -> Bool

(/=) :: CalendarDiffTime -> CalendarDiffTime -> Bool

Data CalendarDiffTime

Since: 1.9.2

Defined in Data.Time.LocalTime.Internal.CalendarDiffTime

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> CalendarDiffTime -> c CalendarDiffTime

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c CalendarDiffTime

toConstr :: CalendarDiffTime -> Constr

dataTypeOf :: CalendarDiffTime -> DataType

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c CalendarDiffTime)

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c CalendarDiffTime)

gmapT :: (forall b. Data b => b -> b) -> CalendarDiffTime -> CalendarDiffTime

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> CalendarDiffTime -> r

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> CalendarDiffTime -> r

gmapQ :: (forall d. Data d => d -> u) -> CalendarDiffTime -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> CalendarDiffTime -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> CalendarDiffTime -> m CalendarDiffTime

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> CalendarDiffTime -> m CalendarDiffTime

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> CalendarDiffTime -> m CalendarDiffTime

Show CalendarDiffTime

Defined in Data.Time.LocalTime.Internal.CalendarDiffTime

Methods

showsPrec :: Int -> CalendarDiffTime -> ShowS

show :: CalendarDiffTime -> String

showList :: [CalendarDiffTime] -> ShowS

Semigroup CalendarDiffTime

Additive

Defined in Data.Time.LocalTime.Internal.CalendarDiffTime

Methods

(<>) :: CalendarDiffTime -> CalendarDiffTime -> CalendarDiffTime

sconcat :: NonEmpty CalendarDiffTime -> CalendarDiffTime

stimes :: Integral b => b -> CalendarDiffTime -> CalendarDiffTime

Monoid CalendarDiffTime

Additive

Defined in Data.Time.LocalTime.Internal.CalendarDiffTime

Methods

mempty :: CalendarDiffTime

mappend :: CalendarDiffTime -> CalendarDiffTime -> CalendarDiffTime

mconcat :: [CalendarDiffTime] -> CalendarDiffTime

ParseTime CalendarDiffTime

Defined in Data.Time.Format.Parse.Instances

Methods

substituteTimeSpecifier :: Proxy CalendarDiffTime -> TimeLocale -> Char -> Maybe String

parseTimeSpecifier :: Proxy CalendarDiffTime -> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String

buildTime :: TimeLocale -> [(Char, String)] -> Maybe CalendarDiffTime

FormatTime CalendarDiffTime

Defined in Data.Time.Format.Format.Instances

Methods

formatCharacter :: Bool -> Char -> Maybe (FormatOptions -> CalendarDiffTime -> String)

ISO8601 CalendarDiffTime

PyYmMdDThHmMs[.sss]S (ISO 8601:2004(E) sec. 4.4.3.2)

Defined in Data.Time.Format.ISO8601

Methods

iso8601Format :: Format CalendarDiffTime

calendarTimeDays :: CalendarDiffDays -> CalendarDiffTime

calendarTimeTime :: NominalDiffTime -> CalendarDiffTime

scaleCalendarDiffTime :: Integer -> CalendarDiffTime -> CalendarDiffTime

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

Local Time

data LocalTime

A simple day and time aggregate, where the day is of the specified parameter, and the time is a TimeOfDay. Conversion of this (as local civil time) to UTC depends on the time zone. Conversion of this (as local mean time) to UT1 depends on the longitude.

Constructors

LocalTime

Fields

• localDay :: Day
• localTimeOfDay :: TimeOfDay

Instances

Eq LocalTime

Defined in Data.Time.LocalTime.Internal.LocalTime

Methods

(==) :: LocalTime -> LocalTime -> Bool

(/=) :: LocalTime -> LocalTime -> Bool

Data LocalTime

Defined in Data.Time.LocalTime.Internal.LocalTime

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> LocalTime -> c LocalTime

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c LocalTime

toConstr :: LocalTime -> Constr

dataTypeOf :: LocalTime -> DataType

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c LocalTime)

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c LocalTime)

gmapT :: (forall b. Data b => b -> b) -> LocalTime -> LocalTime

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> LocalTime -> r

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> LocalTime -> r

gmapQ :: (forall d. Data d => d -> u) -> LocalTime -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> LocalTime -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> LocalTime -> m LocalTime

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> LocalTime -> m LocalTime

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> LocalTime -> m LocalTime

Ord LocalTime

Defined in Data.Time.LocalTime.Internal.LocalTime

Methods

compare :: LocalTime -> LocalTime -> Ordering

(<) :: LocalTime -> LocalTime -> Bool

(<=) :: LocalTime -> LocalTime -> Bool

(>) :: LocalTime -> LocalTime -> Bool

(>=) :: LocalTime -> LocalTime -> Bool

max :: LocalTime -> LocalTime -> LocalTime

min :: LocalTime -> LocalTime -> LocalTime

Read LocalTime

Defined in Data.Time.Format.Parse

Methods

readsPrec :: Int -> ReadS LocalTime

readList :: ReadS [LocalTime]

readPrec :: ReadPrec LocalTime

readListPrec :: ReadPrec [LocalTime]

Show LocalTime

Defined in Data.Time.LocalTime.Internal.LocalTime

Methods

showsPrec :: Int -> LocalTime -> ShowS

show :: LocalTime -> String

showList :: [LocalTime] -> ShowS

NFData LocalTime

Defined in Data.Time.LocalTime.Internal.LocalTime

Methods

rnf :: LocalTime -> ()

ParseTime LocalTime

Defined in Data.Time.Format.Parse.Instances

Methods

substituteTimeSpecifier :: Proxy LocalTime -> TimeLocale -> Char -> Maybe String

parseTimeSpecifier :: Proxy LocalTime -> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String

buildTime :: TimeLocale -> [(Char, String)] -> Maybe LocalTime

FormatTime LocalTime

Defined in Data.Time.Format.Format.Instances

Methods

formatCharacter :: Bool -> Char -> Maybe (FormatOptions -> LocalTime -> String)

ISO8601 LocalTime

yyyy-mm-ddThh:mm:ss[.sss] (ISO 8601:2004(E) sec. 4.3.2 extended format)

Defined in Data.Time.Format.ISO8601

Methods

iso8601Format :: Format LocalTime

addLocalTime :: NominalDiffTime -> LocalTime -> LocalTime

addLocalTime a b = a + b

diffLocalTime :: LocalTime -> LocalTime -> NominalDiffTime

diffLocalTime a b = a - b

utcToLocalTime :: TimeZone -> UTCTime -> LocalTime

Get the local time of a UTC time in a time zone.

localTimeToUTC :: TimeZone -> LocalTime -> UTCTime

Get the UTC time of a local time in a time zone.

ut1ToLocalTime :: Rational -> UniversalTime -> LocalTime

Get the local time of a UT1 time on a particular meridian (in degrees, positive is East).

localTimeToUT1 :: Rational -> LocalTime -> UniversalTime

Get the UT1 time of a local time on a particular meridian (in degrees, positive is East).

data ZonedTime

A local time together with a time zone.

There is no Eq instance for ZonedTime. If you want to compare local times, use zonedTimeToLocalTime. If you want to compare absolute times, use zonedTimeToUTC.

Constructors

ZonedTime

Fields

• zonedTimeToLocalTime :: LocalTime
• zonedTimeZone :: TimeZone

Instances

Data ZonedTime

Defined in Data.Time.LocalTime.Internal.ZonedTime

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> ZonedTime -> c ZonedTime

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c ZonedTime

toConstr :: ZonedTime -> Constr

dataTypeOf :: ZonedTime -> DataType

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c ZonedTime)

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c ZonedTime)

gmapT :: (forall b. Data b => b -> b) -> ZonedTime -> ZonedTime

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> ZonedTime -> r

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> ZonedTime -> r

gmapQ :: (forall d. Data d => d -> u) -> ZonedTime -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> ZonedTime -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> ZonedTime -> m ZonedTime

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> ZonedTime -> m ZonedTime

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> ZonedTime -> m ZonedTime

Read ZonedTime

This only works for a zonedTimeZone in ±HHMM format, single-letter military time-zones, and these time-zones: "UTC", "UT", "GMT", "EST", "EDT", "CST", "CDT", "MST", "MDT", "PST", "PDT".

Defined in Data.Time.Format.Parse

Methods

readsPrec :: Int -> ReadS ZonedTime

readList :: ReadS [ZonedTime]

readPrec :: ReadPrec ZonedTime

readListPrec :: ReadPrec [ZonedTime]

Show ZonedTime

Defined in Data.Time.LocalTime.Internal.ZonedTime

Methods

showsPrec :: Int -> ZonedTime -> ShowS

show :: ZonedTime -> String

showList :: [ZonedTime] -> ShowS

NFData ZonedTime

Defined in Data.Time.LocalTime.Internal.ZonedTime

Methods

rnf :: ZonedTime -> ()

ParseTime ZonedTime

Defined in Data.Time.Format.Parse.Instances

Methods

substituteTimeSpecifier :: Proxy ZonedTime -> TimeLocale -> Char -> Maybe String

parseTimeSpecifier :: Proxy ZonedTime -> TimeLocale -> Maybe ParseNumericPadding -> Char -> ReadP String

buildTime :: TimeLocale -> [(Char, String)] -> Maybe ZonedTime

FormatTime ZonedTime

Defined in Data.Time.Format.Format.Instances

Methods

formatCharacter :: Bool -> Char -> Maybe (FormatOptions -> ZonedTime -> String)

ISO8601 ZonedTime

yyyy-mm-ddThh:mm:ss[.sss]±hh:mm (ISO 8601:2004(E) sec. 4.3.2 extended format)

Defined in Data.Time.Format.ISO8601

Methods

iso8601Format :: Format ZonedTime

utcToZonedTime :: TimeZone -> UTCTime -> ZonedTime

zonedTimeToUTC :: ZonedTime -> UTCTime

getZonedTime :: IO ZonedTime

utcToLocalZonedTime :: UTCTime -> IO ZonedTime