One of my customers has set the timezone as Indian Standard Time in his server which is based in US datacenter. He has set a cron job to execute every wednesday at 16:30. The cron job executes a script which sends out emails. He claims that the script is sending out the script as per EST timezone. I am unable to find the entry of the cron job in the /var/log/cron file. How can I find out when exactly did the cron job run?