date_sun_info

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

date_sun_info — Retourne un tableau avec les informations sur le lever/coucher du soleil ainsi que le début et la fin de l'aube

Description

date_sun_info(int $timestamp, float $latitude, float $longitude): array

Liste de paramètres

timestamp: Horodatage Unix.
latitude: Latitude, en degrés.
longitude: Longitude, en degrés.

Valeurs de retour

Retourne un tableau en cas de succès ou false si une erreur survient. La structure du tableau est détaillé dans la liste suivante :

sunrise: L'horodatage du levé du soleil (angle de zenith = 90°35').
sunset: L'horodatage du coucher du soleil (angle de zenith = 90°35').
transit: L'horodatage où le soleil est à son zénith, c'est-à-dire a atteint son point le plus haut.
civil_twilight_begin: Le début de l'aube civile (angle de zenith = 96°). Il termine au sunrise.
civil_twilight_end: La fin du crépuscule civil (angle de zenith = 96°). Elle commence au sunset.
nautical_twilight_begin: Le début de l'aube nautique (angle de zenith = 102°). Il termine au civil_twilight_begin.
nautical_twilight_end: La fin du crépuscule nautique (angle de zenith = 102°). Elle commence a civil_twilight_end.
astronomical_twilight_begin: Le début de l'aube astronomique (angle de zenith = 108°). Il termine au nautical_twilight_begin.
astronomical_twilight_end: La fin du crépuscule astronomique (angle de zenith = 108°). Elle commence a nautical_twilight_end.

Les valeurs des éléments du tableau sont soit des timestamps UNIX, false, si le soleil est sous le zenith respectif pour la journée entière, ou true, si le soleil est au dessus du zenith respectif pour toute la journée.

Exemples

Exemple #1 Exemple avec date_sun_info()


<?php
$sun_info = date_sun_info(strtotime("2006-12-12"), 31.7667, 35.2333);
foreach ($sun_info as $key => $val) {
  echo "$key: " . date("H:i:s", $val) . "\n";
}
?>

L'exemple ci-dessus va afficher :

sunrise: 05:52:11
sunset: 15:41:21
transit: 10:46:46
civil_twilight_begin: 05:24:08
civil_twilight_end: 16:09:24
nautical_twilight_begin: 04:52:25
nautical_twilight_end: 16:41:06
astronomical_twilight_begin: 04:21:32
astronomical_twilight_end: 17:12:00

Exemple #2 Nuit polaire


<?php
var_dump(date_sun_info(strtotime("2017-12-21"), 90, 0));
?>

L'exemple ci-dessus va afficher :

array(9) {
  ["sunrise"]=>
  bool(false)
  ["sunset"]=>
  bool(false)
  ["transit"]=>
  int(1513857490)
  ["civil_twilight_begin"]=>
  bool(false)
  ["civil_twilight_end"]=>
  bool(false)
  ["nautical_twilight_begin"]=>
  bool(false)
  ["nautical_twilight_end"]=>
  bool(false)
  ["astronomical_twilight_begin"]=>
  bool(false)
  ["astronomical_twilight_end"]=>
  bool(false)
}

Exemple #3 Soleil de minuit


<?php
var_dump(date_sun_info(strtotime("2017-06-21"), 90, 0));
?>

L'exemple ci-dessus va afficher :

array(9) {
  ["sunrise"]=>
  bool(true)
  ["sunset"]=>
  bool(true)
  ["transit"]=>
  int(1498046510)
  ["civil_twilight_begin"]=>
  bool(true)
  ["civil_twilight_end"]=>
  bool(true)
  ["nautical_twilight_begin"]=>
  bool(true)
  ["nautical_twilight_end"]=>
  bool(true)
  ["astronomical_twilight_begin"]=>
  bool(true)
  ["astronomical_twilight_end"]=>
  bool(true)
}

Voir aussi

date_sunrise() - Retourne l'heure de lever du soleil pour un jour et un endroit donnés
date_sunset() - Retourne l'heure de coucher du soleil pour un jour et un endroit donnés

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User Contributed Notes 4 notes

down

ELY M. ¶

11 years ago


I have been working on my own php script to get current down or up for sun and moon.   I had to add function for any places that have 24 hour sun.  



here is my code for places with 24 hour sun. 



<?php

   if ($sunrise == 0 && $sunset == 0) {

   $sunrise24 = "";

   $sunset24 = "";

   //run suninfo

   $sunup = date_sun_info(strtotime($year."-".$month."-".$day), $lat, $lon);

   }



//check if sun is up all day.

if ($sunup[sunrise] == 1 && $sunup[sunrise] == 1) {

imagecopy($sky, $sun, 60, 20, 0, 0, $sun_width, $sun_height);

imagefill($sky, 0, 0, $bluesky);

}

?>

down

nospam at nomail dot com ¶

3 years ago


maybe I am wrong, but I think

SUNFUNCS_RET_TIMESTAMP     return GMT(0) time

SUNFUNCS_RET_STRING     Return local time
SUNFUNCS_RET_DOUBLE     Return local time

down

mother at localsnow dot com ¶

11 years ago


We needed the length of the day, both sunrise to sunset and twilight to twilight for particular latitudes. Sun_info() is just the thing. We mistakenly thought 'transit' was this value, which it is not. Transit is the time of day the sun is at its zenith. To get length of day, one must perform math on the results of sun_info().

When doing math with time values, don't expect date() to do the conversion to hours:minutes:seconds. date() thinks the passed value is a time since the epoch. You will need to do your own conversion to hours:minutes:seconds, using something like the following:
<?php
function hms($val) {
// convert seconds to hours:minutes:seconds
$v=$val;
$h=intval($v/3600);
$v-=($h*3600); // subtract hours
$m=intval($v/60); 
$v-=($m*60); // subtract minutes
$s=$v % 60; // seconds remaining
if ($h<10) {$h="0".$h;}
if ($m<10) {$m="0".$m;}
if ($s<10) {$s="0".$s;}
return $h.":".$m.":".$s;
}
?>

Regarding date_sunrise() and date_sunset(), these both return values without seconds and without correction for Daylight time. Whereas sun_info() handles seconds as well as Daylight time. It even handles dates prior to the epoch correctly as negative timestamps, at least as of php 5.2.12 

For example, 
sun_info(strtotime('July 4, 1776'),47.3506,-122.6417) 
produces something like the following when using date_default_timezone_set('America/Los_Angeles') and 
date("H:i:s", $val)

sunrise: 04:20:26 [-6106016374] 
sunset: 20:09:03 [-6105959457] 
transit: 12:14:45 [-6105987915] 
civil_twilight_begin: 03:40:54 [-6106018746] 
civil_twilight_end: 20:48:35 [-6105957085] 
nautical_twilight_begin: 02:46:58 [-6106021982] 
nautical_twilight_end: 21:42:31 [-6105953849] 
astronomical_twilight_begin: 01:28:06 [-6106026714] 
astronomical_twilight_end: 23:01:23 [-6105949117] 

* * *

down

info at mobger dot de ¶

1 year ago


The relation between timestamp and geoposition is not good defined.
My try of a definition is:

date_sun_info — 
Returns an array with information about sunset/sunrise and twilight begin/end as Unix-Timestamp for the the geoposition, which must have the same (local) date as the timestamp in the parameter-block for the function `date_sun_info`.

<?php
<?php
$tStamp  = strtotime('2020-12-04');
$latitude = 50;
echo("\n");
foreach([-181,-180,0,180,360] as $longitude ) {
    foreach([-86401,-86400,-86399, -1,0,1,86399, 86400,86401] as $variTimeStamp) {

        $sunInfoList = date_sun_info(($tStamp-$variTimeStamp),$latitude, $longitude);
        $sunrise = new DateTime('@'.$sunInfoList['sunrise']);
        echo($sunInfoList['sunrise']. ' => '.$sunrise->format('H:i:s d.m.Y').' || [ '.$variTimeStamp.' // ' . $longitude.'° ]');
        echo("\n");
    }    
    echo("\n");
}

?>

You may recognize the equivalence of `[ 0 // 360° ]` and `[ 86400 // 0° ]` in the results.
The result is:
<?php
/**
1607197612 => 19:46:52 05.12.2020 || [ -86401 // -181° ]
1607197612 => 19:46:52 05.12.2020 || [ -86400 // -181° ]
1607111141 => 19:45:41 04.12.2020 || [ -86399 // -181° ]
1607111141 => 19:45:41 04.12.2020 || [ -1 // -181° ]
1607111141 => 19:45:41 04.12.2020 || [ 0 // -181° ]
1607024668 => 19:44:28 03.12.2020 || [ 1 // -181° ]
1607024668 => 19:44:28 03.12.2020 || [ 86399 // -181° ]
1607024668 => 19:44:28 03.12.2020 || [ 86400 // -181° ]
1606938194 => 19:43:14 02.12.2020 || [ 86401 // -181° ]

1607197372 => 19:42:52 05.12.2020 || [ -86401 // -180° ]
1607197372 => 19:42:52 05.12.2020 || [ -86400 // -180° ]
1607110901 => 19:41:41 04.12.2020 || [ -86399 // -180° ]
1607110901 => 19:41:41 04.12.2020 || [ -1 // -180° ]
1607110901 => 19:41:41 04.12.2020 || [ 0 // -180° ]
1607024428 => 19:40:28 03.12.2020 || [ 1 // -180° ]
1607024428 => 19:40:28 03.12.2020 || [ 86399 // -180° ]
1607024428 => 19:40:28 03.12.2020 || [ 86400 // -180° ]
1606937953 => 19:39:13 02.12.2020 || [ 86401 // -180° ]

1607154137 => 07:42:17 05.12.2020 || [ -86401 // 0° ]
1607154137 => 07:42:17 05.12.2020 || [ -86400 // 0° ]
1607067665 => 07:41:05 04.12.2020 || [ -86399 // 0° ]
1607067665 => 07:41:05 04.12.2020 || [ -1 // 0° ]
1607067665 => 07:41:05 04.12.2020 || [ 0 // 0° ]
1606981191 => 07:39:51 03.12.2020 || [ 1 // 0° ]
1606981191 => 07:39:51 03.12.2020 || [ 86399 // 0° ]
1606981191 => 07:39:51 03.12.2020 || [ 86400 // 0° ]
1606894715 => 07:38:35 02.12.2020 || [ 86401 // 0° ]

1607197301 => 19:41:41 05.12.2020 || [ -86401 // 180° ]
1607197301 => 19:41:41 05.12.2020 || [ -86400 // 180° ]
1607110828 => 19:40:28 04.12.2020 || [ -86399 // 180° ]
1607110828 => 19:40:28 04.12.2020 || [ -1 // 180° ]
1607110828 => 19:40:28 04.12.2020 || [ 0 // 180° ]
1607024353 => 19:39:13 03.12.2020 || [ 1 // 180° ]
1607024353 => 19:39:13 03.12.2020 || [ 86399 // 180° ]
1607024353 => 19:39:13 03.12.2020 || [ 86400 // 180° ]
1606937877 => 19:37:57 02.12.2020 || [ 86401 // 180° ]

1607154065 => 07:41:05 05.12.2020 || [ -86401 // 360° ]
1607154065 => 07:41:05 05.12.2020 || [ -86400 // 360° ]
1607067591 => 07:39:51 04.12.2020 || [ -86399 // 360° ]
1607067591 => 07:39:51 04.12.2020 || [ -1 // 360° ]
1607067591 => 07:39:51 04.12.2020 || [ 0 // 360° ]
1606981115 => 07:38:35 03.12.2020 || [ 1 // 360° ]
1606981115 => 07:38:35 03.12.2020 || [ 86399 // 360° ]
1606981115 => 07:38:35 03.12.2020 || [ 86400 // 360° ]
1606894638 => 07:37:18 02.12.2020 || [ 86401 // 360° ]

*/
?>

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