JavaScript 1.2; JScript 3.0; ECMAScript v1
date.setUTCMonth(month) date.setUTCMonth(month, day)
month
The month, expressed in universal time, to be set in date. This argument should be an integer between 0 ( January) and 11 (December). Note that months are numbered beginning with 0, while days within the month are numbered beginning with 1.
day
An optional integer, between 1 and 31 that is used as the new value (in universal time) of the day-of-month field of date.
The millisecond representation of the adjusted date.