07-26-2013
Some have a tz command that let you control time zone and DST settings.
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi! How ican change parameters for daylight, i mean, i want change the daylight on december first week. I've tried with /usr/lib/tztab but result unsuccessful. (7 Replies)
Discussion started by: agustincm
7 Replies
2. HP-UX
Need help with a timezone change for my user profile on HPUX, from UTC to PDT8PST
pgop:/home/pgop > date
Thu Sep 25 15:09:50 UTC 2008
to
Thu Sep 25 08:12:44 PDT 2008
Tried looking through manuals for date over this to no luck!!
:confused: (3 Replies)
Discussion started by: pgop
3 Replies
3. HP-UX
How can I change in HP-UX The time zone
to reflect the Jerusalem/Israel time zone (I think ist called IDT or IST) ?
tnx (5 Replies)
Discussion started by: umen
5 Replies
4. AIX
Hi Everyone
Just wanted to share with you that IBM AIX is having again problem with Summer Time Shift..
IBM Possible Action Required: System time may not change properly at DST start/end dates on AIX 7.1 and AIX 6.1 - United States
For me it means some additional overtimes in the... (0 Replies)
Discussion started by: gito
0 Replies
5. Shell Programming and Scripting
Hi
Summary:
- Script will take 2 arguments
- Argument 1: Date/Time value in a particular format
- Argument 2: TimeZone value
Examples:
Argument 1:
a. "May 11, 2012 08:00:00 AM"
b. "Dec 21, 2012 12:21:12 PM"
c. "Oct 2, 2012 05:00:00 PM"
Argument 2:
a. MT or MST or MDT
b. ET
c.... (4 Replies)
Discussion started by: anuragpgtgerman
4 Replies
6. Solaris
can some one help me out as it is showing 2 different time zones in global zone and nonglobal zone .In global zone it is showing in GMT while in nonglobal zone i it showing as PDT.
System in running with solaris 10 (3 Replies)
Discussion started by: ravijanjanam12
3 Replies
7. Shell Programming and Scripting
Hello All,
I am in process of migrating all my scripts from AIX box to Linux box. In one of my script I calculate my last week date with the below command
$ TZ=EDT+172 date +%F
2012-12-13
$ uname -a
AIX 1 7 000B29AAD400
Now when I tried running the same in Linux, it gives a false... (2 Replies)
Discussion started by: sathyaonnuix
2 Replies
8. AIX
Hello AIX friends,
We have timezone settings on our AIX 6.1 boxes set to Europe/London.
How can I change it to UTC timezone with Daylight saving disabled.
After running "smit chtz_user" I don't see UTC option in the listing.
Please advise.
TIA (3 Replies)
Discussion started by: prvnrk
3 Replies
9. Shell Programming and Scripting
Hi guys thanks for the help for my previous posts.Now i have a requirement that i download a XMl file which has UTC time stamp.I need to convert UTC time into Unix server timezone.
For ex if the time zone of unix server is CDT then i need to convert into CDT.whatever may be the system time... (5 Replies)
Discussion started by: mohanalakshmi
5 Replies
10. Solaris
Hi,
If I change date and time in global zone, then it will affect in non global zones.
During this process what files will get affect in non global zones and which mechanism it's using to change.
gloabl zone:Solaris 11.3 X86
TIA (1 Reply)
Discussion started by: Sumanthsv
1 Replies
TZ(5) File Formats Manual TZ(5)
NAME
TZ - Time zone environment variable
SYNOPSIS
TZ=zone[-]offset[dst[offset][,start[/time],end[/time]]]
DESCRIPTION
The TZ environment variable tells functions such as the ctime(3) family and programs like date what the time zone and daylight saving rule
is. The value of TZ has the POSIX standardized form shown in the synopsis. This form specifies the zone names, offsets from GMT, and day-
light savings changeover times for at least the current year.
zone A three or more letter name for the time zone in normal (winter) time.
[-]offset
A signed time telling the offset of the time zone westwards from Greenwich. The time has the form hh[:mm[:ss]] with a one of two
digit hour, and optional two digit minutes and seconds.
dst The name of the time zone when daylight savings is in effect. It may be followed by an offset telling how big the clock correction
is other than the default of 1 hour.
start/time,end/time
Specifies the start and end of the daylight savings period. The start and end fields indicate on what day the changeover occurs.
They must be in one of the following formats:
Jn The Julian day n (1 <= n <= 365) ignoring leap days, i.e. there is no February 29.
n The zero-based Julian day (0 <= n <= 365). Leap days are not ignored.
Mm.n.d
This indicates month m, the n-th occurrence of day d (1 <= m <= 12, 1 <= n <= 5, 0 <= d <= 6, 0=Sunday). The 5-th occurrence
means the last occurrence of that day in a month. So M4.1.0 is the first Sunday in April, M9.5.0 is the last Sunday in Septem-
ber.
The time field indicates the time the changeover occurs on the given day.
EXAMPLES
Greenwich Mean Time:
TZ=GMT0
Middle European Time, 1 hour east from Greenwich, daylight savings starts on the last Sunday in March at 2 AM and ends on the last Sunday
in October at 3 AM:
TZ='MET-1MET DST,M3.5.0/2,M10.5.0/3'
British time, daylight savings starts and ends at the same moment as MET, but in an earlier time zone:
TZ=GMT0BST,M3.5.0/1,M10.5.0/2
The eastern european time zones also have the changeovers at the same absolute time as British time and MET.
U.S. Eastern Standard Time, 5 hours west from Greenwich, daylight savings starts on the first Sunday in April at 2 AM and ends on the last
Sunday in October at 2 AM:
TZ=EST5EDT,M4.1.0/2,M10.5.0/2
It shouldn't surprise you that daylight savings in New Zealand is observed in the months opposite from the previous examples. It starts on
the first Sunday in October at 2 AM and ends on the third Sunday in March at 3 AM:
TZ=NZST-12NZDT,M10.1.0/2,M3.3.0/3
SEE ALSO
readclock(8), date(1).
BUGS
You may have noticed that many fields are optional. Do no omit them, because the defaults are bogus. If you need daylight savings then
fully specify the changeovers.
West is negative, east is positive, ask any sailor.
AUTHOR
Kees J. Bot (kjb@cs.vu.nl)
TZ(5)