On Mon, May 03, 2004 at 08:40:02PM +0300, Dan Fruehauf wrote: > I've been googling for a while and couldnt find it, so here i am. > for some reasons i prefer not to go into, i have to synchronize clocks between > machines where one machine has it's clock on GMT and the other doesnt (it's > clock is GMT + x hours forward / backward).
Actually: Israel's time zone is not defined as "GMT+2" or "GMT+3". It is defined as "Israel's official time zone. And its offset from GMT thus varies over the year. > my question is, is it possible to configure ntpd (or any other ntp client) to > fetch the time from some distant ntp server and to apply an offset (like -1 > hour, -2 hours, or something similar) on the time it recieves from the > server? Basically: no. Naturally it can be done. But it seems you misunderstand what time zones are. THe whole purpose of the time zones is to be able to use the same clock as everybody else in the world, and only display it locally as the correct time for the location. Time is usually saved and transfered as an offset from a certain time in the past. E.g: he number of seconds since a certain Epoch. In unix time is usually kept as the number of seconds since 1.1.1970 GMT (or UTC? nm). In ntp the time is usually kept as the number of seconds since 1.1.1980 GMT, IIRC. If the computers don't agree on the time bad things happen: you can send a mail to somone and the recipient gets a mail "from the future". Or gets the response "an hour too late (and he has the logs to show it). So the ntp clients and server don't really care about the local time zone. They only want to make the (the above is actually slightly over-simplistic. But the cunclusion below should hold anyway) So what you need to do is to fix the time-zone definition of the local system. Not further break your synchronizaiion with the world. -- Tzafrir Cohen +---------------------------+ http://www.technion.ac.il/~tzafrir/ |vim is a mutt's best friend| mailto:[EMAIL PROTECTED] +---------------------------+ ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
