Changes time's timezone (for example to convert from GMT to another time zone). If time's current timezone is unset (i.e. equal to gda.types.TIMEZONE_INVALID), then this function simply sets time's timezone attribute; Otherwise, it adds or removes hours, minutes or seconds to reflect the time in the new timezone.
fractionnal part of the seconds, in millionth' of second
hour representation of the time, as a number between 0 and 23
minute representation of the time, as a number between 0 and 59
second representation of the time, as a number between 0 and 59
number of seconds added to the GMT timezone
Represents a time information.