Caution:
You can change the time that Rev (or any program) gets on your
computer by simply setting your computer clock to anything you like.
The same thing can happen on any computer or server. Just ask a large
company that has servers in different cities and countries.
The key to iRev servers is that they are probably extremely stable and
constantly updated to one of the atomic clock sites.
One issue of daylight savings (especially in the state of Indiana) is
that some counties will change their clocks and others will not.
Another issue is that the last daylight savings change in the Spring
was done one week later in the UK than in the US. The result was two
time changes 7 days apart.
A computer program running on a processor can have functions that ask
the processor for date and time info, but daylight savings changes are
external to the processor.
If you write a function that gets the seconds at midnight each day,
then see if it is 24.0 hours after the previous midnight, you know the
processor has not changed the time zone or time shift in its control
panel settings.
If you have a local processor and one at iRev, you need to track this
for each processor and maintain the correct offset ( +1, -1, 0 ). You
might want to study GMT options and use one of those.
Hope this helps.
Jim Ault
On Aug 31, 2009, at 8:07 PM, Gregory Lypny wrote:
Just a little more detail on my previous post. Would appreciate
anyone confirming that iRev does not adjust for local Daylight
Savings Time or I've misunderstood something because this has the
potential to really mess up my work if I get it wrong.
There's a difference of one hour as this code in iRev
<?rev
put the seconds & "</br>"
convert the seconds to dateItems
put it & "</br>"
put the long time
?>
returns
1251773601
2009,8,31,21,53,21,2
9:53:21 PM
and the equivalent handler in Revolution
put the seconds
convert the seconds to dateItems
put return & it after msg
put return & the long time after msg
run three seconds later, returns
1251773604
2009,8,31,22,53,24,2
10:53:24 PM
Sigh,
Gregory
Frustrated in Montreal (DST)
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Jim Ault
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