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Data.Time.Clock.TAI

Description
TAI and leap-second tables for converting to UTC: most people won't need this module.
Synopsis

data AbsoluteTime
taiEpoch :: AbsoluteTime
addAbsoluteTime :: DiffTime -> AbsoluteTime -> AbsoluteTime
diffAbsoluteTime :: AbsoluteTime -> AbsoluteTime -> DiffTime
type LeapSecondTable = Day -> Integer
utcDayLength :: LeapSecondTable -> Day -> DiffTime
utcToTAITime :: LeapSecondTable -> UTCTime -> AbsoluteTime
taiToUTCTime :: LeapSecondTable -> AbsoluteTime -> UTCTime
parseTAIUTCDATFile :: String -> LeapSecondTable

Documentation

data AbsoluteTime | Source

AbsoluteTime is TAI, time as measured by a clock.
Instances

Eq AbsoluteTime
Ord AbsoluteTime
Show AbsoluteTime

taiEpoch :: AbsoluteTime | Source

The epoch of TAI, which is 1858-11-17 00:00:00 TAI.

addAbsoluteTime :: DiffTime -> AbsoluteTime -> AbsoluteTime | Source

addAbsoluteTime a b = a + b

diffAbsoluteTime :: AbsoluteTime -> AbsoluteTime -> DiffTime | Source

diffAbsoluteTime a b = a - b

type LeapSecondTable = Day -> Integer | Source

TAI - UTC during this day. No table is provided, as any program compiled with it would become out of date in six months.

utcDayLength :: LeapSecondTable -> Day -> DiffTime | Source

utcToTAITime :: LeapSecondTable -> UTCTime -> AbsoluteTime | Source

taiToUTCTime :: LeapSecondTable -> AbsoluteTime -> UTCTime | Source

parseTAIUTCDATFile :: String -> LeapSecondTable | Source

Parse the contents of a tai-utc.dat file. This does not do any kind of validation and will return a bad table for input not in the correct format.
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