FW: London (GMT) notation self-conflicts
Olson, Arthur David (NIH/NCI) [E]
olsona at dc37a.nci.nih.gov
Thu Nov 1 14:14:12 UTC 2007
I'm forwarding this message from Paul Bruin, who is not on the time zone mailing list.
Those of you who are on the time zone mailing list should direct replies appropriately.
From: BRUIN Paul [mailto:pbruin at miranda.com]
Sent: Wednesday, October 31, 2007 11:58
To: tz at lecserver.nci.nih.gov
Subject: London (GMT) notation self-conflicts
My company's application servers use the Olson database as a time zone reference.
The following listings appear, which I believe are so-named in the Olson database:
London (Greenwich Mean Time)
Belfast (Greenwich Mean Time)
Dublin (Greenwich Mean Time)
These notations are correct only in winter, when all three cities are on GMT.
But in Summer, these cities are GMT+1.
This means that in summer, there is a conflict within the notation.
Note that this conflict does not arise for cities outside the United Kingdom.
Taking Paris (Central European Time) as an example, Paris time and Central European Time are always the same, irrespective of the extra hour of Daylight Savings offset from GMT in summer.
To fix this, "Greenwich Mean Time" should be removed from the notation for London, Belfast and Dublin.
It might be replaced by "United Kingdom Time," "British Isles Time" or "British Time."
Does this conflicting notation indeed exist in the Olson database and, if so, can it be fixed?
Thanks for your help,
pbruin at miranda.com
17 Skylark Drive, #39
Larkspur, CA 94939
More information about the tz