== Nagios Core 3.3.1 == I'm running into an issue where notification emails are not being sent to contacts at the time periods I would expect. Seemingly Nagios calculates the notification period based on the underlying OS time rather than using the timezone specified in nagios.cfg. Curent timezone setup: 1. OS is set to timezone Australia/Brisbane 2. /etc/nagios/nagios.cfg is configured with "use_timezone=UTC" Current timeperiod setup: I have configured a series of timeperiods based on UTC for Brisbane, UK, California etc. e.g.: define timeperiod { alias UK Weekdays timeperiod_name uk_weekdays monday 08:00-18:00 tuesday 08:00-18:00 wednesday 08:00-18:00 thursday 08:00-18:00 friday 08:00-18:00 } define timeperiod { alias Queensland Weekdays timeperiod_name qld_weekdays sunday 22:00-24:00 monday 00:00-07:00,22:00-24:00 tuesday 00:00-07:00,22:00-24:00 wednesday 00:00-07:00,22:00-24:00 thursday 00:00-07:00,22:00-24:00 friday 00:00-07:00 } However Nagios is sending the notification emails to the wrong contacts by calculating the notification period based on the OS time rather than using the timezone value specified in nagios.cfg. For example if I change the OS timezone to UTC then everything works as expected. The TZ environment variable has not been set on the OS. Has anyone experienced a similar issue? Or have I incorrectly configured something?<div> </div><div>Thanks,</div><div> </div><div>Peter</div>