Oh, This day light saving thing. Why people don't set their whole environment clock on UTC ?
Believe me, I all will have better life if that happens.
Any way, The newer versions of crontab have introduced a good way to run job in different time zones. Just look at the following example of crontab file for instance.
And to check when this year's day light saving happens ?
[healthcheck@adm01 ~]$ zdump -v Australia/Victoria| grep `date +%Y`
Australia/Victoria Sat Apr 6 15:59:59 2013 UTC = Sun Apr 7 02:59:59 2013 EST isdst=1 gmtoff=39600
Australia/Victoria Sat Apr 6 16:00:00 2013 UTC = Sun Apr 7 02:00:00 2013 EST isdst=0 gmtoff=36000
Australia/Victoria Sat Oct 5 15:59:59 2013 UTC = Sun Oct 6 01:59:59 2013 EST isdst=0 gmtoff=36000
Australia/Victoria Sat Oct 5 16:00:00 2013 UTC = Sun Oct 6 03:00:00 2013 EST isdst=1 gmtoff=39600
[healthcheck@adm01 ~]$
Believe me, I all will have better life if that happens.
Any way, The newer versions of crontab have introduced a good way to run job in different time zones. Just look at the following example of crontab file for instance.
#######################IMPORTANT#######################
# Anything beyond this line will run in Australia/Victoria time zone
#######################################################
CRON_TZ=Australia/Victoria
#######################################################
00 08 * * * /home/healthcheck/linux/send-email.sh
#######################IMPORTANT#######################
# Anything beyond this line will run in America/New_York time zone
#######################################################
CRON_TZ=America/New_York
#######################################################
00 08 * * * /home/healthcheck/linux/syslog-check.sh
#######################IMPORTANT#######################
# Anything beyond this line will run in UTC time zone
#######################################################
CRON_TZ=UTC
#######################################################
01 16 * * * /home/healthcheck/linux/runDST.sh
And to check when this year's day light saving happens ?
[healthcheck@adm01 ~]$ zdump -v Australia/Victoria| grep `date +%Y`
Australia/Victoria Sat Apr 6 15:59:59 2013 UTC = Sun Apr 7 02:59:59 2013 EST isdst=1 gmtoff=39600
Australia/Victoria Sat Apr 6 16:00:00 2013 UTC = Sun Apr 7 02:00:00 2013 EST isdst=0 gmtoff=36000
Australia/Victoria Sat Oct 5 15:59:59 2013 UTC = Sun Oct 6 01:59:59 2013 EST isdst=0 gmtoff=36000
Australia/Victoria Sat Oct 5 16:00:00 2013 UTC = Sun Oct 6 03:00:00 2013 EST isdst=1 gmtoff=39600
[healthcheck@adm01 ~]$