Date.prototype.getUTCDate()
The getUTCDate() method returns the day of the month (from
1 to 31) in the specified date according to universal time.
Syntax
getUTCDate()
Return value
A number.
If the Date object represents a valid date, an integer number ranging from 1 to 31
representing day of month for the given date, according to universal time.
Otherwise, NaN
if the Date object doesn't represent a valid date.