https://community.hpe.com/t5/operating-system-hp-ux/ntp-winter-time-changing/m-p/4705628#M384369 Hi All<BR /><BR />Please help me with the following:<BR />We have to change to winter time this weekend. We also have an applications, using timestamps, so it is important to now how I can fix the problem?<BR />The problem is, that the time will become -1 hour, and the applications will dublicate timestamps?<BR /><BR />I'm using NTP server.<BR /><BR />And the output from the servers:<BR /># date<BR />Wed Oct 27 13:19:53 EETDST 2010<BR /><BR /><BR /><BR />Is anybody now the best practice in this situation? <BR />Pionts will be provided :) Wed, 27 Oct 2010 09:35:06 GMT Stanimir 2010-10-27T09:35:06Z https://community.hpe.com/t5/operating-system-hp-ux/ntp-winter-time-changing/m-p/4705628#M384369 Hi All<BR /><BR />Please help me with the following:<BR />We have to change to winter time this weekend. We also have an applications, using timestamps, so it is important to now how I can fix the problem?<BR />The problem is, that the time will become -1 hour, and the applications will dublicate timestamps?<BR /><BR />I'm using NTP server.<BR /><BR />And the output from the servers:<BR /># date<BR />Wed Oct 27 13:19:53 EETDST 2010<BR /><BR /><BR /><BR />Is anybody now the best practice in this situation? <BR />Pionts will be provided :) Wed, 27 Oct 2010 09:35:06 GMT https://community.hpe.com/t5/operating-system-hp-ux/ntp-winter-time-changing/m-p/4705628#M384369 Stanimir 2010-10-27T09:35:06Z https://community.hpe.com/t5/operating-system-hp-ux/ntp-winter-time-changing/m-p/4705629#M384370 Hi:<BR /><BR />NTP works in the Epoch seconds just as your server records timestamps. Your applications (and the underlying operating system) [should] use the Epoch value.<BR /><BR />What you perceive as your local time is a positive or negative offset from this time as defined by your TZ environmental variable. If the rules for daylight (winter) transition are current in your '/usr/lib/tztab' file (which is delivered by a patch when it is officially updated), then you will perceive the time shift accordingly.<BR /><BR />You don't need to take any actions. The manpages for 'cron(1M)' describe how Spring and Autumn transitions are handled.<BR /><BR />Regards!<BR /><BR />...JRF... Wed, 27 Oct 2010 09:46:46 GMT https://community.hpe.com/t5/operating-system-hp-ux/ntp-winter-time-changing/m-p/4705629#M384370 James R. Ferguson 2010-10-27T09:46:46Z