Time value?

[nirjari patel]

var expirationDate = new Date();
expirationDate.setTime(expirationDate.getTime()
+ 1000*60*60*24*30);

In this code expirationDate.getTime() gives time in milli seconds. I got 1321924420144, when I tried this code at 8:13 pm on November 11, 2011. So my confusion is, this 1321924420144 is from when ? Is it from 00 hours of November 11, 2011 ? Or is starting time some different point ?
If its from 00 hours of November 11, 2011, then numbers don't match.

(1321924420144) / (1000*60*60) = 367201. So what kind of time is this ? Please explain, what does this figure returned by getTime() mean ?

Thanks

[Bear Bibeault]

Milliseconds since Jan 1, 1970 (UNIX base time).

[Eric Pascarello]

Get yourself a good reference: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date

Eric