lib/Data/Time.hs

    {-|

    = Quick Start

    Use these types for time regardless of location (not caring about leap-seconds):

    * 'UTCTime' for actual times
    * 'NominalDiffTime' for differences between times, i.e. durations

    Use these types for the ways people refer to time and time differences:

    * 'Day' for something like June 27th 2017
    * 'DayOfWeek' for something like Tuesday
    * 'TimeOfDay' for something like 5pm
    * 'LocalTime' for a 'Day' with a 'TimeOfDay'
    * 'TimeZone' for a time zone offset (not actually the time zone itself) like -0700
    * 'ZonedTime' for a 'LocalTime' with a 'TimeZone'
    * 'CalendarDiffDays' for something like 6 years, 1 month and 5 days
    * 'CalendarDiffTime' for something like 6 years, 1 month, 5 days, 3 hours, 7 minutes and 25.784 seconds

    Use this for low-latency timing:

    * 'Data.Time.Clock.System.SystemTime'

    These are less commonly needed:

    * 'Data.Time.Clock.TAI.AbsoluteTime' and 'DiffTime' if you do care about leap-seconds.
    * 'Data.Time.Clock.TAI.LeapSecondMap' for tracking the leap-seconds
    * 'UniversalTime' for time based on Earth rotation
    -}
    module Data.Time
    (
        module Data.Time.Calendar,
        module Data.Time.Clock,
        module Data.Time.LocalTime,
        module Data.Time.Format
    ) where

    import Data.Time.Calendar
    import Data.Time.Clock
    import Data.Time.LocalTime
    import Data.Time.Format