Epoch Converter Functions
Index
Find more epoch conversion routines (in other programming languages) on the homepage.
JavaScript routines
Convert an epoch to human-readable date:
var myDate = new Date( your epoch date *1000);
document.write(myDate.toGMTString()+"<br>"+myDate.toLocaleString());
The example above gives the following output (with epoch date 1):
You can also use getFullYear, getMonth, getDay, etc. See documentation below.
Convert human-readable dates to epoch:
var myDate = new Date("July 1, 1978 02:30:00"); // Your timezone!
var myEpoch = myDate.getTime()/1000.0;
document.write(myEpoch);
The example above gives the following output:
There are many ways to create dates in Javascript (for example with setFullYear, setMonth, setDay, etc.).
More about the JavaScript Date object.
VBScript / ASP routines
Warning! You need to correct the time zone for these examples to work.
A manual quick fix is to either:
- look up the offset in wmi and add it to Now()
- change the "01/01/1970 00:00:00" string, for example for GMT/UTC+1 = "01/01/1970 01:00:00"
The current Unix time:
' check time zone
DateDiff("s", "01/01/1970 00:00:00", Now())
Current Unix time with time zone fix:
function date2epoch(myDate)
Set dateTime = CreateObject("WbemScripting.SWbemDateTime")
dateTime.SetVarDate (myDate)
DateDiff("s", "01/01/1970 00:00:00", CDate(dateTime.GetVarDate (false)))
end function
Wscript.echo date2epoch(Now())date2epoch converts a VBScript date to an Unix timestamp:
' check time zone if your date is not GMT/UTC
function date2epoch(myDate)
date2epoch = DateDiff("s", "01/01/1970 00:00:00", myDate)
end function
Usage example:
date2epoch(Now())
epoch2date converts Unix timestamps back to VBScript dates:
' result is GMT/UTC
function epoch2date(myEpoch)
epoch2date = DateAdd("s", myEpoch, "01/01/1970 00:00:00")
end function