JavaScript UTC()

View Source... This returns how many milliseconds there are from 1/1/1970 to 12/31/2000 (or a date of your choice) according to universal time. The year (yyyy), month (0 - 11) and day (1 - 31) are required (in that order), and hours (0 - 23), minutes (0 - 59), seconds (0 - 59), and milliseconds (0 - 999) are optional (also in that order).