Question on abbreviations
AndyLipscomb at decosimo.com
Wed Sep 27 20:36:02 UTC 2006
Rules don't expire. Each rule creates a number of transition points--an "only" rule creates exactly one, a ranged rule creates one for each year in the range, and a "max" rule yields an infinite number (in theory). The current DST rule is always the one put in effect by the most recent transition point
J Andrew Lipscomb, CPA*ABV, ASA
Decosimo Corporate Finance
900 Tallan Building
2 Union Square
Chattanooga, TN 37402
From: Paul Schauble [mailto:Paul.Schauble at ticketmaster.com]
Sent: Wed 27 September 2006 16:28
To: tz at lecserver.nci.nih.gov; tz at lecserver.nci.nih.gov
Subject: RE: Question on abbreviations
Then I'm confused. At the end of 1942, that rule should expire, because of the "only" leaving what rule in effect? Apparently none, leaving the time in 1943 undefined.
Where can I find a explanation of the tz text database format?
From: tz-request at elsie.nci.nih.gov [mailto:tz-request at elsie.nci.nih.gov]
On Behalf Of Paul Eggert
Sent: Wednesday, September 27, 2006 9:29 AM
To: tz at lecserver.nci.nih.gov
Subject: Re: Question on abbreviations
"Mark Davis" <mark.davis at icu-project.org> writes:
> According to the spec, TO = "only" is equivalent to saying that the TO
> equals the FROM value.
Yes, that's what's happening here. The rule to switch to DST applies only in 1942. There is no rule to switch _out_ of DST in 1942, so DST continues until 1945, the next rule that applies.
>> Rule NAME FROM TO TYPE IN ON AT SAVE
>> > ...
>> > Rule US 1942 only - Feb 9 2:00 1:00 W #
>> > Rule US 1945 only - Aug 14 23:00u 1:00 P
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