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smarty
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| Posted: March 13 2007 at 07:37 | IP Logged
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Not sure if this is a bug or not.......
I guess this function DOES NOT take Daylight Savings Time into account when it returns Sunrise/Sunset Dawn/Dusk times?? (documentation makes no mention if DST is applied or not).
My location is set properly, but my times seem off by about an hour.
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TonyNo
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| Posted: March 13 2007 at 13:20 | IP Logged
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Mine is working correctly. 
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smarty
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| Posted: March 13 2007 at 14:31 | IP Logged
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I wonder......
I patched my XP system with the Microsoft just a few nights ago (I routinley keep auto update OFF and do patch updates only about 4/year). Prior to doing the patch updates I already had the latest version of PH on my machine.
I wonder if the PH function relies in anyway on the Microsoft patch, and the order of installation????
To be very clear...
For me, the fuction doesn't work, even though my XP system is now patched.
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smarty
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| Posted: March 13 2007 at 19:45 | IP Logged
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ph_getsuntime(date("03/13/2007"),1) <=Sunrise
Formula Evaluation
The formula evaluates to: 07:02:48 <=close????
ph_getsuntime(date("03/13/2007"),2) <=Sunset
Formula Evaluation
The formula evaluates to: 17:26:59 <=about5:30 pm
????
From Weather.com (for San Antonio)
Sunrise = 7:46 am
Sunset = 7:41pm
Both my production machine and experimental machine perform the same with this function. I update my experimental machine will all patches as soon as they are released (auto-update).
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TonyNo
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| Posted: March 13 2007 at 20:08 | IP Logged
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Maybe a clue...
ph_getsuntime( today(), 2) = 19:00:19 <- Correct
ph_getsuntime( date( "03/13/2007"), 2) = 16:25:12
ph_getsuntime( date( today()), 2) = 16:25:12
Maybe a date() problem?
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dhoward
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| Posted: March 13 2007 at 20:29 | IP Logged
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Ok, Ive checked this out and I think Tony has hit upon the problem. First, the ph_getsuntime function is strictly math based upon the date passed to it and the longitude and latitude defined in the Setup screen. It also takes the daylight savings time formula into effect. It doesnt depend upon anything Windows (I don't know if thats a blessing or a curse  ).
The problem is that the ph_getsuntime formula is expecting a datetime value. It definately blows up with just a date value. The today() function returns a datetime and so it works.
The proper way to structure a date value in PowerHome is yyyy-mm-dd. It doesnt require any quotes or similar. A datetime is structured yyyy-mm-dd hh:mm:ss. So, to get the function working with your data, you should be able to do this: ph_getsuntime(2007-03-13 00:00:00,1). You can also use the format that is above, but need to use the datetime function instead: ph_getsuntime(datetime("03/13/2007"),1).
Try this out and let me know how it goes.
Dave.
Edited by dhoward - March 13 2007 at 20:30
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smarty
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| Posted: March 13 2007 at 20:40 | IP Logged
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SUPER!! That will work. The only reason I was using a date (only) value was that was how I intrepreted the function help (see below).
ph_getsuntime ( dt, type )
Argument Description
dt The date that you wish to retrieve the sun time for.
type The type of sun calculation you wish returned. Use 1 for Sunrise, 2 for Sunset, 3 for Dawn (start of civil twilight), and 4 for Dusk (end of civil twilight).
Return value
Time. The time of the specified sun calculation for the specified date.
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Viper
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| Posted: March 19 2007 at 11:38 | IP Logged
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I haven't done any testing, but you may want to use a different time value as the time change really occurs somewhere between 1:00, 2:00, or 3:00AM depending on where you are and which way things are changing. So March 11th was both a "Daylight Savings Time day" and also not a "Daylight Savings Time day".
Another thing to consider is that 2:30 am on March 11th did not exist.
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Topic: ph_getsuntime ( dt, type )
