Note:
Uses UTC time to set the hour.
Syntax:
dateName.setUTCHours(param1, param2, param3, param4)
Parameters:
param1 Required; the hour. Value: 0 to 23.
param2 Optional; the minute. Value: 0 to 59.
param3 Optional; the seconds. Value: 0 to 59.
param4 Optional; the milliseconds elapsed in the current second.
Value: 0 to 999.