JavaScript 1.3 provides support for the following methods for setting different time components in a given Date object:

Method	setUTCMonth()
Parameters	<month>(mandatory) <day of the month>(optional)
Description	Sets the month of the specified date according to Universal Coordinated Time. If you don't specify the <day of the month>, the value returned from getUTCDate() is used. The expected range of <month> is between 0 and 11. If you specify a parameter outside its expected range, other parameters will be updated accordingly. If, for example, you specify 15 for the <month>, the <year> will be incremented by one, and the <month> will be set to 3.
Example	myBirthDate = new Date(); myBirthMonth.setUTCMonth(2);
JavaScript 1.2	setMonth()

Method	setUTCDate()
Parameters	<day of the month>
Description	Sets the day of the month of the specified date according to Universal Coordinated Time. The expected range of <day of the month> is between 1 and 31. If you specify a parameter outside its expected range, other parameters will be updated accordingly. If, for example, you specify 45 for the <day of the month> of June, the month of the Date object will be incremented by one to July, and the <day of the month> will be set to 15.
Example	myBirthDate = new Date(); myBirthDayM.setUTCDate(27);
JavaScript 1.2	setDate()

Method	setUTCHours()
Parameters	<hours>(mandatory) <minutes>(optional) <seconds>(optional) <milliseconds>(optional)
Description	Sets the hours of the specified date according to Universal Coordinated Time. If you don't specify the <minutes>, <seconds>, and <milliseconds>, the values returned from getUTCMinutes(), getUTCSeconds() and getUTCMilliseconds() are used. Notice you cannot specify the <milliseconds> parameter without specifying the <minutes> and <seconds> parameters. Similarly, you cannot specify the <seconds> parameter without specifying the <minutes> one. If you specify a parameter outside its expected range, other parameters will be updated accordingly. If, for example, you specify 1500 for the <milliseconds> parameter, the <seconds> will be incremented by one, and the <milliseconds> will be set to 500.
Example	myBirthDate = new Date(); myBirthDate.setUTCHours(3, 32, 30, 509);
JavaScript 1.2	setHours()

Method	setUTCMinutes()
Parameters	<minutes>(mandatory) <seconds>(optional) <milliseconds>(optional)
Description	Sets the minutes of the specified date according to Universal Coordinated Time. If you don't specify the <seconds> and <milliseconds>, the values returned from getUTCSeconds() and getUTCMilliseconds() are used. Notice you cannot specify the <milliseconds> without specifying the <seconds>. If you specify a parameter outside its expected range, other parameters will be updated accordingly. If, for example, you specify 150 for the <seconds>, the <minutes> will be incremented by two, and the <seconds> will be set to 30.
Example	myBirthDate = new Date(); myBirthDate.setUTCMinutes(35, 18, 850);
JavaScript 1.2	setMinutes()

Method	setUTCSeconds()
Parameters	<seconds>(mandatory) <milliseconds>(optional)
Description	Sets the seconds of the specified date according to Universal Coordinated Time. If you don't specify the <milliseconds>, the value returned from getUTCMilliseconds() is used. The expected range of <seconds> is between 0 and 59. If you specify a parameter outside its expected range, other parameters will be updated accordingly. If, for example, you specify 151 for the <seconds>, the minutes of the Date object will be incremented by two, and the <seconds> will be set to 31.
Example	myBirthDate = new Date(); myBirthDate.setUTCSeconds(43, 756);
JavaScript 1.2	setSeconds()

Method	setUTCMilliseconds()
Parameters	<milliseconds>
Description	Sets the milliseconds in the specified date according to Universal Coordinated Time. The parameter value should be between 0 and 999. If you specify a number outside this range, other date variables in the Date object will be incremented to accommodate your number. If you specify 1012, for example, the number of milliseconds in the Date object will be 12 and the number of seconds will be incremented by 1.
Example	myBirthDate = new Date(); myBirthDate.setUTCMilliseconds(103);
JavaScript 1.2	None