SilcBool silc_timezone(char *timezone, SilcUInt32 timezone_size);

    Returns current timezone in Universal time format into the `timezone'
    buffer of size of `timezone_size'.  The possible values this function
    returns are: Z (For UTC timezone), +hh (UTC + hours) -hh (UTC - hours),
    +hh:mm (UTC + hours:minutes) or -hh:mm (UTC - hours:minutes).  The
    returned values are always offsets to UTC.

    Returns FALSE on error, TRUE otherwise.