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I have a cron script under /etc/cron.d as so:

SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

0 0 * * * root /usr/local/sbin/app_logrotate >> /var/log/app-newday.log

This works but it executes always at 00:00 local time. The app in question uses UTC time ( I cannot change this). In my time zone this is a few hours behind resulting in the date tag on the daily logfile this application creates never being a new day.
I can't change the system localtime to UTC as other applications depend on localtime. I was wondering if it is possible to execute this cron only at 00:00 UTC while keeping my system localtime.
I have tried adding TZ=UTC to the cron script which did not work.
Does anyone know how this can be done?

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In general the cron dameon will inherit the system's timezone. The only (easy) way I know is to set the TZ/CRON_TZ variable.

Did you restart the cron daemon after setting the TZ / CRON_TZ variable. This si required for cron to pick up the changes!

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