function get_timezone_offset

6.x get_timezone_offset($remote_tz, $origin_tz = null)
7.x get_timezone_offset($remote_tz, $origin_tz = null)

Returns the offset from the origin timezone to the remote timezone, in seconds.



  • @param $origin_tz; If null the servers current timezone is used as the origin.
  • @return int;
2 calls to get_timezone_offset()
calendar_get_available_times_on_date in modules/calendar/calendar.module
calendar_schedule_appointment_confirm_form in modules/calendar/calendar.module
The confirmation form the user will see once they have made their schedule selections.


includes/, line 276
This file contains misc functions for FlightPath


function get_timezone_offset($remote_tz, $origin_tz = null) {
  if ($origin_tz === null) {
    if (!is_string($origin_tz = date_default_timezone_get())) {
      return false; // A UTC timestamp was returned -- bail out!
  $origin_dtz = new DateTimeZone($origin_tz);
  $remote_dtz = new DateTimeZone($remote_tz);
  $origin_dt = new DateTime("now", $origin_dtz);
  $remote_dt = new DateTime("now", $remote_dtz);
  $offset = $origin_dtz->getOffset($origin_dt) - $remote_dtz->getOffset($remote_dt);
  return $offset;