date command

[chris5126]

HI Guys,

Prob a very simple one but im stumped, I run the following command and get:

date
Wednesday, 19 August 2009 09:20:59 BST

But when I run

date -u '+%y%m%d.%H:%M:%S'
090819.08:21:27

My question is why is the second command an hour behind? In my environment the following are set:

LC_TIME=en_GB.ISO8859-15
TZ=GB

I have tried it on a different server with exactly the same commands and env variables and get the correct result, what am I doing wrong here?

[sknake]

Great Britian has summer daylight savings time which means your clock is off by an hour.

[chris5126]

hi,

But why does the date command give me the correct date then when I try and use the date -u command does it suddenly consider day light savings?

[sknake]

Please see this site:
http://wwp.greenwichmeantime.com/

It doesn't make sense to me either but it seems like that is probably a law in GB.

[chris5126]

I have worked it out have used:

`date +"%Y.%m.%d.%H%M"`

Instead of date -u

[iceman29]

Actually, the below command gives the time as per GMT :

date -u

where as on using

date

, we get the time according to what we have set our time zone (TZ) as.