Returns the number of milliseconds between the Unix epoch (January 1, 1970, 00:00:00 UTC) and the specified date.
UTC(year, month?, date?, hours?, minutes?, seconds?, milliseconds?)
year
The year.
Since JavaScript was invented in the 20th century, when people didn’t know a lot about time keeping, when provided a year between 0 and 99, it is interpreted as a year in the 20th century.
month optional
The month as a number between 0 (January) and 11 (December).
date optional
The date as a number between 1 and 31.
hours optional
Must be supplied if minutes is supplied. A number from 0 to 23 (midnight to 11pm) that specifies the hour.
minutes optional
Must be supplied if seconds is supplied. A number from 0 to 59 that specifies the minutes.
seconds optional
Must be supplied if milliseconds is supplied. A number from 0 to 59 that specifies the seconds.
milliseconds optional
A number from 0 to 999 that specifies the milliseconds.
A number.