Sunrise - Sunset PHP Script

[daveq]

Your link looks OK to me now

Good day
Sunset will occur at 08:19 pm EDT

I had two files and selected the wrong one.   

As you say it is now correct.

--Dave

[TNETWeather]

Actually, I was looking for PHP code for one of the pairs.

The two pairs were Sunrise/Sunset  and Moonrise/Moonset

I had PHP code for one of them, but never found the other.  Can't recall which pair it was now though.  Most likely the Moon ones.

[MCHALLIS]

Kevin,
I see you commented the putenv("TZ=$myTZ");
try again after uncommenting it, because I tried with your settings and get "Sunset will occur at 07:27 pm MST"

[MCHALLIS]

Actually, I was looking for PHP code for one of the pairs.

The two pairs were Sunrise/Sunset  and Moonrise/Moonset

I had PHP code for one of them, but never found the other.  Can't recall which pair it was now though.  Most likely the Moon ones.

Farmers almanac does this:
http://www.almanac.com/rise/index.php

[TNETWeather]

Kevin,
I see you commented the putenv("TZ=$myTZ");
try again after uncommenting it, because I tried with your settings and get "Sunset will occur at 07:27 pm MST"

hmmmm...

Just uncommented it out.  Still reported 8pm.

Tried again with "US/Arizona"  ... same response.

[daveq]

Maybe you need America/Phoenix

From Ken's web site

US   +332654-1120424   America/Phoenix   Mountain Standard Time - Arizona

--Dave

[niko]

What $tzoffset  = -8; # pacific timezone do you have?

[niko]

  $myTZ = "US/Arizona";  //NOTE: this *MUST* be set correctly

// translate UTC times to your LOCAL time for the displays.
 putenv("TZ=$myTZ");


$latitude  = 33.40; //North
$longitude = -111.88; //West
$tzoffset  = -7; # pacific timezone

=

Good day
Sunset will occur at 07:27 pm MST

[MCHALLIS]

What $tzoffset  = -8; # pacific timezone do you have?

I modified the script earlier today (ver. 1.02), it calculates $tzoffset automatically now based on the $myTZ setting.

I also tried his settings on my server and it was within 2 minutes of WD
"WD: Sunset 07:25 pm MST"
"PHP: Sunset will occur at 07:27 pm MST"

I wonder why my server would say 07:27 pm MST and his server 08:00 pm MST  using the same settings ????

Code: [Select]

<?php
// PHP code for day/night, sunrise/sunset times
// prints is it night or day?
// prints what time is sunrise or sunset?
// **Requires PHP 5**
// by Mike Challis http://www.carmosaic.com/
// Ver. 1.02 05/22/08 fixed timezone issue

// ##### begin settings #############

// Set the timezone for your location, because some servers are in different timezone than your location
//  http://saratoga-weather.org/timezone.txt  has the list of timezone names
$myTZ = 'America/Phoenix';  // NOTE: this *MUST* be set correctly

$time_format = 'h:i a T'; // 08:53 pm PDT

// Set the latitude and longitude for your location
$latitude  = 33.4026; //North
$longitude = -111.8831; //West

// uncomment one zenith setting: http://en.wikipedia.org/wiki/Twilight
$zenith = 90+(50/60); // True sunrise/sunset
//$zenith = 96;          // Civilian Twilight - Conventionally used to signify twilight
//$zenith = 102;         // Nautical Twilight - the point at which the horizon stops being visible at sea.
//$zenith = 108;         // Astronomical Twilight - the point when Sun stops being a source of any illumination.

// ##### end of settings #############

// translate UTC times to your LOCAL time for the displays.
putenv("TZ=$myTZ");

// find time offset in hours
$tzoffset = date("Z")/60 / 60;

$dayornight = day_or_night();

if($dayornight == 'night') {
      $sunrise = date_sunrise(time(), SUNFUNCS_RET_STRING, $latitude, $longitude, $zenith, $tzoffset);
      $sunrise_time = date($time_format, strtotime(date("Y-m-d") . ' '. $sunrise));
      echo 'Good night<br/>';
      echo 'Sunrise will occur at '. $sunrise_time;
}else{
      $sunset = date_sunset(time(), SUNFUNCS_RET_STRING, $latitude, $longitude, $zenith, $tzoffset);
      $sunset_time = date($time_format, strtotime(date("Y-m-d") . ' '. $sunset));
      echo 'Good day<br/>';
      echo 'Sunset will occur at '. $sunset_time;
}

function day_or_night() {
   global $latitude, $longitude, $tzoffset, $zenith;

   $sunrise = date_sunrise(time(), SUNFUNCS_RET_DOUBLE, $latitude, $longitude, $zenith, $tzoffset);
   $sunset = date_sunset(time(), SUNFUNCS_RET_DOUBLE, $latitude, $longitude, $zenith, $tzoffset);
   $now = date("H") + date("i") / 60 + date("s") / 3600;

   if ($sunrise < $sunset)
      if (($now > $sunrise) && ($now < $sunset)) return "day";
         else return "night";
   else
     if (($now > $sunrise) || ($now < $sunset)) return "day";
        else return "night";
}


?>


[TNETWeather]

Something is very weird...  It is acting like it is rounding the hour.

I updated the script so that it outputs the settings being used.

I am sneaking out of work now and will play with this a bit when I get home.

[niko]

I think the time is off on your server:

Date: Fri, 23 May 2008 00:09:51 GMT

not that that would cause it...

[TNETWeather]

Server is time sync'd to an atomic clock.

Request from the web server returns GMT time.

Date: Fri, 23 May 2008 01:29:33 GMT

Updated the script to output its current time in GMT and each of the 4 basic US timezones...

So you can check it against your local time.

Settings:

Server Time before anything is set by script is:
Fri, 23 May 2008 01:44:56 GMT
Thu, 22 May 2008 18:44:56 MST
Thu, 22 May 2008 21:44:56 EDT
Thu, 22 May 2008 20:44:56 CDT
Thu, 22 May 2008 19:44:56 MDT
Thu, 22 May 2008 18:44:56 PDT

Local Time: Thu, 22 May 2008 18:44:56 MST
myTZ = America/Phoenix
lat = 33.4
long = -111.88
Zenith = 90.833333333333
tzoffset = -7


Good day
Sunset will occur at 08:00 pm MST

[TNETWeather]

Put the same code on another server and it works...

Must be something about the configuration on my server.... not sure what though...

Settings:

Server Time before anything is set by script is:
Fri, 23 May 08 01:55:46 +0000
Thu, 22 May 08 21:55:46 -0400
Thu, 22 May 08 21:55:46 -0400
Thu, 22 May 08 20:55:46 -0500
Thu, 22 May 08 19:55:46 -0600
Thu, 22 May 08 18:55:46 -0700

Local Time: Thu, 22 May 08 18:55:46 -0700
myTZ = America/Phoenix
lat = 33.4
long = -111.88
Zenith = 90.8333333333
tzoffset = -7


Good day
Sunset will occur at 07:27 pm MST

[niko]

I understand that the server returns GMT, but if I query it at 11 minutes past the hour, GMT will also be 11 minutes past the hour, only the hour should be different, whereas it returned 00:09:51 GMT    Seems to be OK now though 

[MCHALLIS]

I saw Kevin testing with some debugging code, so I added some of that in.

changed code in 1st post
Ver. 1.03 05/22/08 added setting to print debugging info, also added a few default timezones, just uncomment what you need