Date.UTC()
The Date.UTC()
static method accepts parameters similar to the
Date
constructor, but treats them as UTC. It returns the number of
milliseconds since January 1, 1970, 00:00:00 UTC.
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Syntax
Date.UTC(year)
Date.UTC(year, monthIndex)
Date.UTC(year, monthIndex, day)
Date.UTC(year, monthIndex, day, hour)
Date.UTC(year, monthIndex, day, hour, minute)
Date.UTC(year, monthIndex, day, hour, minute, second)
Date.UTC(year, monthIndex, day, hour, minute, second, millisecond)
year
-
Integer value representing the year.
Values from
0
to99
map to the years1900
to1999
. All other values are the actual year. See the example. monthIndex
Optional-
An integer between
0
(January) and11
(December) representing the month. Since ECMAScript 2017 it defaults to0
if omitted. (Up until ECMAScript 2016,monthIndex
was a required parameter. As of ES2017, it no longer is.) day
Optional-
An integer between
1
and31
representing the day of the month. If omitted, defaults to1
. hour
Optional-
An integer between
0
and23
representing the hours. If omitted, defaults to0
. minute
Optional-
An integer between
0
and59
representing the minutes. If omitted, defaults to0
. second
Optional-
An integer between
0
and59
representing the seconds. If omitted, defaults to0
. millisecond
Optional-
An integer between
0
and999
representing the milliseconds. If omitted, defaults to0
.
Return value
A number representing the number of milliseconds for the given date since January 1, 1970, 00:00:00, UTC.
Description
UTC()
takes comma-delimited date and time parameters and returns the
number of milliseconds between January 1, 1970, 00:00:00, universal time and the
specified date and time.
Years between 0
and 99
are converted to a year in the
20th century (1900 + year)
. For example, 95
is
converted to the year 1995
.
The UTC()
method differs from the Date
constructor in two
ways:
Date.UTC()
uses universal time instead of the local time.-
Date.UTC()
returns a time value as a number instead of creating aDate
object.
If a parameter is outside of the expected range, the UTC()
method updates
the other parameters to accommodate the value. For example, if 15
is used
for monthIndex
, the year will be incremented by 1
(year + 1)
and 3
will be used for the month.
UTC()
is a static method of Date
, so it's called as
Date.UTC()
rather than as a method of a Date
instance.
Examples
Using Date.UTC()
The following statement creates a Date
object with the arguments treated
as UTC instead of local:
const utcDate = new Date(Date.UTC(2018, 11, 1, 0, 0, 0));
Specifications
Specification |
---|
ECMAScript Language Specification # sec-date.utc |
Browser compatibility
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Compatibility notes
Date.UTC() with fewer than two arguments
When providing less than two arguments to Date.UTC()
, ECMAScript 2017
requires that NaN
is returned. Engines that weren't supporting this
behavior have been updated (see bug 1050755,
ecma-262 #642).
Date.UTC();
Date.UTC(1);
// Safari: NaN
// Chrome/Opera/V8: NaN
// Firefox <54: non-NaN
// Firefox 54+: NaN
// IE: non-NaN
// Edge: NaN