Types and functions for working with time

time.elm

type Date
type Time
type Timestamp
type Timezone = System | UTC | TimezoneData ...
type IntervalUnit = Millisecond | Second | Minute | Hour | Day | Month | Year
type Interval
type Locale
type Format


date : Int -> Int -> Int -> Date
time : Int -> Int -> Int -> Time
fromDateTime : Date -> Time -> Timezone -> Timestamp

toUnixTimestamp : Timestamp -> Int
fromUnixTimestamp : Int -> Timestamp

parse : String -> Format -> Timezone -> Maybe Timestamp
parseWithTimezone : String -> Format -> Maybe (Timestamp, Timezone)

format : Locale -> Format -> Timezone -> Timestamp -> String

millisecond : Timezone -> Timestamp -> Int
second : Timezone -> Timestamp -> Int
minute : Timezone -> Timestamp -> Int
hour : Timezone -> Timestamp -> Int
day : Timezone -> Timestamp -> Int
month : Timezone -> Timestamp -> Int
year : Timezone -> Timestamp -> Int
dayOfWeek : Timezone -> Timestamp -> Int
-- or
get : Timezone -> IntervalUnit -> Timestamp -> Int
set : Timezone -> IntervalUnit -> Int -> Timestamp -> Timestamp

isAfter : Timestamp -> Timestamp -> Boolean
isBefore : Timestamp -> Timestamp -> Boolean
isSame : Timestamp -> Timestamp -> Boolean

interval : IntervalUnit -> Int -> Interval
add : Timezone -> Interval -> Timestamp -> Timestamp -- does it need Timezone?
subtract :  Timezone -> Interval -> Timestamp -> Timestamp -- does it need Timezone?

startOf : Timezone -> IntervalUnit -> Timestamp -> Timestamp
endOf : Timezone -> IntervalUnit -> Timestamp -> Timestamp

isLeapYear : Int -> Boolean
isLeapSecond : Timestamp -> Boolean

isSummerTime : Timestamp -> Timezone -> Boolean
timezoneOffset : Timestamp -> Timezone -> Int