[lug] Setting time zone

[Gary Hodges]

Actually, this is precisely my intention.  In this case I do not want my 
computer to change to DST.  Back in the day I ran into problems when I 
set up an instrument in the pacific time zone.  There isn't a 
Continent/City setting that doesn't switch to DST like there is in the 
other US time zones.

Gary

George Sexton wrote:
> Uh, you should really select America/Chicago.
> 
> Three letter time zones don't always mean what you think.
> 
> I have had UK users select BST thinking it meant British Summer Time, 
> but in the Olson db, it's Bering Standard Time. They would then call and 
> complain the imports/exports were off by 10 hours.
> 
> Another problem is that some time zones like EST implicitly don't have 
> Daylight savings time in them. There's no rule in those zones for it.
> 
> Really, really, follow the Continent/City convention for your time zone.
> 
> In your example, where you're creating the TZ setting, there's no 
> accomodation for DST. 1st Sunday in November, your clocks will be off by 
> an hour.
> 
> Gary Hodges wrote:
>> On an Ubuntu system I'd like to set the time zone on a computer to 
>> CST.  When I run "sudo tzselect" and go through the steps I get:
>>
>> ------------------------
>> Please identify a location so that time zone rules can be set correctly.
>> Please select a continent or ocean.
>>  1) Africa
>>  2) Americas
>>  3) Antarctica
>>  4) Arctic Ocean
>>  5) Asia
>>  6) Atlantic Ocean
>>  7) Australia
>>  8) Europe
>>  9) Indian Ocean
>> 10) Pacific Ocean
>> 11) none - I want to specify the time zone using the Posix TZ format.
>> #? 11
>> Please enter the desired value of the TZ environment variable.
>> For example, GST-10 is a zone named GST that is 10 hours ahead (east) 
>> of UTC.
>> CST+6
>>
>> The following information has been given:
>>
>>         TZ='CST+6'
>>
>> Therefore TZ='CST+6' will be used.
>> Local time is now:      Tue Aug  5 09:42:30 CST 2008.
>> Universal Time is now:  Tue Aug  5 15:42:30 UTC 2008.
>> Is the above information OK?
>> 1) Yes
>> 2) No
>> #? 1
>>
>> You can make this change permanent for yourself by appending the line
>>         TZ='CST+6'; export TZ
>> to the file '.profile' in your home directory; then log out and log in 
>> again.
>>
>> Here is that TZ value again, this time on standard output so that you
>> can use the /usr/bin/tzselect command in shell scripts:
>> CST+6
>> ------------------------
>>
>> But I want to set the time zone globally, not just for a particular user.
>>
>> Gary
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>