Data.Hourglass

add a period of time to a date

add some time interval to a time representation and returns this new time representation

example:

t1 `timeAdd` mempty { durationHours = 12 }

Convert one time representation into another one

The return type need to be infer by the context.

If the context cannot be infer through this, some specialized functions are available for built-in types:

• timeGetDate

• timeGetDateTimeOfDay

• timeGetElapsed, timeGetElapsedP

Get the difference in seconds between two time representation

effectively:

t2 `timeDiff` t1 = t2 - t1

Get the difference in seconds and nanoseconds between two time representation

effectively:

@t2 `timeDiffP` t1 = t2 - t1

Get the calendar Date (year-month-day) from a time representation

specialization of timeConvert

Get the date and time of day from a time representation

specialization of timeConvert

Get the day time (hours:minutes:seconds) from a time representation

specialization of timeConvert

An amount of time in terms of constant value like hours (3600 seconds), minutes (60 seconds), seconds and nanoseconds.

An amount of conceptual calendar time in terms of years, months and days.

This allow calendar manipulation, representing things like days and months irrespective on how long those are related to timezone and daylight changes.

See Duration for the time-based equivalent to this class.

Represent time types that can be created from other time types.

Every conversion happens throught ElapsedP or Elapsed types.

Timeable represent every type that can be made to look like time types.

• can be converted to ElapsedP and Elapsed

• optionally have a timezone associated

• have nanoseconds accessor (which can return 0 when the type is not more precise than seconds)

A number of seconds elapsed since the unix epoch.

A number of seconds and nanoseconds elapsed since the unix epoch.

Represent any time interval that has an equivalent value to a number of seconds.

Try parsing a string as time using the format explicitely specified

Unparsed characters are ignored and the error handling is simplified

for more elaborate need use localTimeParseE.

Try parsing a string as time using the format explicitely specified

On failure, the parsing function returns the reason of the failure. If parsing is successful, return the date parsed with the remaining unparsed string

Pretty print local time to a string.

The actual output is determined by the format used.

Just like localTimeParse but the time is automatically converted to global time.

like localTimeParseE but the time value is automatically converted to global time.

Pretty print time to a string

The actual output is determined by the format used

ISO8601 Date format string.

e.g. 2014-04-05

ISO8601 Date and Time format string.

e.g. 2014-04-05T17:25:04+00:00 2014-04-05T17:25:04Z

A generic class for anything that can be considered a Time Format string.

All the various formatter that can be part of a time format string

A generic format function composed of a parser and a printer.

A time format string, composed of list of TimeFormatElem

Create a local time type from a timezone and a time type.

The time value is assumed to be local to the timezone offset set, so no transformation is done.

convert the local time representation to another time representation determined by context.

create a local time value from a global one

Change the timezone, and adjust the local value to represent the new local value.

Get back a global time value

Local time representation

this is a time representation augmented by a timezone to get back to a global time, the timezoneOffset needed to be added to the local time.

get the timezone associated with LocalTime

unwrap the LocalTime value. the time value is local.

standard representation for timezone

Simple timezone containing the number of minutes difference with UTC.

Valid values should be between -12*60 to +14*60

Universal Time Coordinated. The generic computer "timezone".

Return if this year is a leap year (366 days) or not (365 days in a year)

Return the day of the week a specific date fall in

return the day of the year where Jan 1 is 0

between 0 and 364. 365 for leap years

Return the number of days in a month.