NTP question

[nyck]

I have a couple of IBM servers that have NTP running and since the clocks going back one hour in the UK they stayed running on Bristish Summer Time. Is there any reason why they did not drop an hour like all my other servers that are running NTP?

I have checked my NTP server and the time is correct on that!

 

[p5wizard]

NTP does NOT take care of any standard/daylight savings time.
NTP is a means of synchronizing system clocks which should be kept at UTC, which doesn't have any notion of daylight savings time.

It is then your system (the TimeZone or TZ system variable) which determines the way time is made visible and if and when a daylight savings period is to be adhered to.

I expect your systems have TZ=GMT0, whereas they should have TZ=GMT0BST in order to follow the rules for GMT to British Summer Time changeover dates/times.

If your NTP server DOES change its clock at the changeover dates, then that is a poor choice as NTP server...

Don't take may word for it: GoogleIt!

http://www.networkworld.com/news/2007/020107-daylight-saving-time-servers.html

HTH,

p5wizard