FW: Time Zone question

Paul Eggert eggert at twinsun.com
Wed Feb 16 01:30:28 UTC 2000

   From: Guy Harris <guy at netapp.com>
   Date: Tue, 15 Feb 2000 14:46:02 -0800 (PST)

   > zdump -v outputs TZ's value.

   On some platforms.

   On others, not:

	   tooting$ uname -sr 
	   SunOS 5.5.1
	   tooting$ zdump
	   tooting$ zdump -v

Sorry, my comment was too terse.  I should have written that
`zdump -v ZONE' outputs ZONE, where ZONE is the value of the TZ
environment variable.  That is how the latest zdump internally
implements the translation from the string 'ZONE' to a series of clock
transitions.  E.g.:

15-red.twinsun.com $ uname -sr
SunOS 5.5.1
16-red.twinsun.com $ zdump -v US/Pacific
US/Pacific  Tue Feb 15 17:00:55 2000 PST
US/Pacific  Fri Dec 13 20:45:52 1901 GMT = Fri Dec 13 13:45:52 1901 isdst=0

SunOS 5.5.1 is running an old version of zdump.  The latest tzcode
zdump outputs something a bit different, but `zdump -v US/Pacific'
still outputs `US/Pacific' on each line.

	   ecco*> version
	   NetApp Release 5.3.4R3: Thu Jan 27 12:08:07 PST 2000
	   ecco*> timezone
	   Current time zone is US/Pacific

Good point.  In other words, even if your system has no notion of the
"TZ environment variable", you print the value that you'd use for TZ
if you were running tzcode.

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