Article View: comp.sys.amiga.tech
Article #2124Timestamps have to be UCT (was Re: 1.4 request)
From: Joe Smith
Date: Tue, 14 Nov 1989 07:38
Date: Tue, 14 Nov 1989 07:38
24 lines
1931 bytes
1931 bytes
In article <3824@nigel.udel.EDU> new@udel.edu (Darren New) writes:
> At the file server end, the server would do an
>Examine(), use local preferences to translate the DateStamp to UTC,
>send the packet. The client would get the packet, convert back from
>UTC to local time using the client's preferences, and all is well.
>I still think things should all be stored in local time.
This won't work. I currently have on my floppy two files that were
created 60 minutes apart, but they both correctly say 29-Oct-89 at 1:30am.
If you have an OS that understands both GMT (UCT) and local time, there
is no way to store the correct date/time unless it is in GMT. If you store
only local time, anything between 1:00am and 2:00am on the last Sunday
in October can be interpreted as Standard time or Daylight Savings time.
And on the first Sunday in April, any local time between 2:00am and 3:00am
will be illegal.
We want a format that stores the date/time as a monotonically increasing,
non-discontinuous value. Local time just doesn't cut it.
--
Joe Smith (408)922-6220 | SMTP: JMS@F74.TYMNET.COM or jms@gemini.tymnet.com
McDonnell Douglas FSCO | UUCP: ...!{ames,pyramid}!oliveb!tymix!tardis!jms
PO Box 49019, MS-D21 | PDP-10 support: My car's license plate is "POPJ P,"
San Jose, CA 95161-9019 | narrator.device: "I didn't say that, my Amiga did!"
Technical Details
Message-ID:
<791@tardis.Tymnet.COM>Path:
arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!apple!bridge2!3comvax!tymix!tardis!jmsReferences:
<3824@nigel.udel.EDU>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!apple!bridge2!3comvax!tymix!tardis!jms From: jms@tardis.Tymnet.COM (Joe Smith) Newsgroups: comp.sys.amiga.tech Subject: Timestamps have to be UCT (was Re: 1.4 request) Summary: Local time is ambiguous and/or nonexistant. Message-ID: <791@tardis.Tymnet.COM> Date: 14 Nov 89 07:38:55 GMT References: <3824@nigel.udel.EDU> Reply-To: jms@tardis.Tymnet.COM (Joe Smith) Organization: McDonnell Douglas Field Service Co, San Jose CA Lines: 24