This will tell you if a date/time is currently in DST, assuming it's in an
area with the most common US DST rules.
<cfscript>
//
// Determine if a date/time falls within Daylight Savings Time period
// - 2AM on the first Sunday in April to 2AM on the last Sunday in
October
//
function IsDST(dt) {
var yr = Year(dt);
var DSTBegin = CreateDateTime(yr, 4, 8 - DayOfWeek(CreateDate(yr, 4,
7)), 2, 0, 0);
var DSTEnd = CreateDateTime(yr, 10, 32 - DayOfWeek(CreateDate(yr, 10,
31)), 2, 0, 0);
return (dt gte DSTBegin) and (dt lt DSTEnd);
}
</cfscript>
----- Original Message -----
From: "Tony" <[EMAIL PROTECTED]>
To: "CF-Talk" <cf-talk@houseoffusion.com>
Sent: Thursday, May 11, 2006 1:03 PM
Subject: Re: How do I detect day lights savings?
> :) never is so fun to say tho'
>
> tw
>
> On 5/11/06, Paul Hastings <[EMAIL PROTECTED]> wrote:
>> Tony wrote:
>> > it works here in america, where the application i use it for will
>> > ALWAYS reside :)
>>
>> in the i18n world you just violated a big honking taboo, "never say
>> never". now you're screwed. probably have to make it i18n first thing
>> tomorrow ;-)
>>
>> > and yeah, congress... ill change it when it comes to that.
>>
>> you'll remember? lying on the fairway concussed by some errant golf
>> ball?
>>
>> > so no, its not i18n friendly, but i bet you could help me get it
>> > there!
>>
>> no need, the timezone CFC does most stuff folks need or have asked for.
>> though lately i've started to recommend using icu4j's timezone class as
>> the base for the CFC as it's olson data (and other tasty bits) get
>> updated way way more frequently than core java. and in any case
>> updating
>> it is kind of difficult w/cf but you could get caught w/your pants
>> down.
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