This seems to work for determining if daylight savings time is in
effect on a given computer. Would this be reliable?
put false into DST
put the short time into x
convert x to seconds
convert x to short time
if x <> the short time then put true into DST
Thanks.
Richard
On Oct 27, 2008, at 7:33 AM, Richard Miller wrote:
Thanks, Sarah. I'm not thrilled about this solution (as you don't
seem to be either), but perhaps it's the best there is. Anyone know
how to get this "time zone data" from a PC?
Richard
On Oct 26, 2008, at 6:19 PM, Sarah Reichelt wrote:
On Mon, Oct 27, 2008 at 7:59 AM, Richard Miller <[EMAIL PROTECTED]>
wrote:
Is there a simple way to know whether DST is in effect in a
particular
location? Would it make sense, for example, to compare "the short
time" with
the local time as accessed through some web site? If they're not
the same,
assume DST is in effect? If so, any ideas for a web site to
access for the
current time?
The only way I found to do this was to get the AppleScript time zone
data and the Rev time zone data and work out the number of seconds
difference between the two. Here is my function for getting the
current number of seconds of daylight savings time:
function DSTseconds
put the internet date into tNow
put last word of tNow into tZone
replace "+" with empty in tZone
put char -2 to -1 of tZone into tMins
delete char -2 to -1 of tZone
add tMins / 60 to tZone
put "tell application " & quote & "Finder" & quote & "" & cr \
& "return time to GMT" & cr & "end tell" into tScript
do tScript as AppleScript
put the result / 3600 into tDiff
put (tDiff - tZone) * 3600 into tDST
return tDST
end DSTseconds
e.g. where I am in Queensland, Australia, we have no daylight savings
so this returns 0.
If I set my location to Sydney which has 1 hour of daylight
savings at
this time of year, I get 3600.
Of course this is a Mac only solution and it only works for the
time &
location settings of the computer where the app is running, you
cannot
feed it the name of a city and ask for the data.
Cheers,
Sarah
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