date_sun_info
(PHP 5 >= 5.1.2, PHP 7)
date_sun_info — Returns an array with information about sunset/sunrise and twilight begin/end
Description
$time
, float $latitude
, float $longitude
) : arrayReturn Values
Returns array on success or FALSE on failure.
The structure of the array is detailed in the following list:
- sunrise
- The time of the sunrise (zenith angle = 90°35').
- sunset
- The time of the sunset (zenith angle = 90°35').
- transit
- The time when the sun is at its zenith, i.e. has reached its topmost point.
- civil_twilight_begin
- The start of the civil dawn (zenith angle = 96°). It ends at sunrise.
- civil_twilight_end
- The end of the civil dusk (zenith angle = 96°). It starts at sunset.
- nautical_twilight_begin
- The start of the nautical dawn (zenith angle = 102°). It ends at civil_twilight_begin.
- nautical_twilight_end
- The end of the nautical dusk (zenith angle = 102°). It starts at civil_twilight_end.
- astronomical_twilight_begin
- The start of the astronomical dawn (zenith angle = 108°). It ends at nautical_twilight_begin.
- astronomical_twilight_end
- The end of the astronomical dusk (zenith angle = 108°). It starts at nautical_twilight_end.
The values of the array elements are either UNIX timestamps, FALSE if the
sun is below the respective zenith for the whole day, or TRUE if the sun is
above the respective zenith for the whole day.
Examples
Example #1 A date_sun_info() example
<?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";
}
?>
The above example will output:
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
Example #2 Polar night
<?php
var_dump(date_sun_info(strtotime("2017-12-21"), 90, 0));
?>
The above example will output:
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)
}
Example #3 Midnight sun
<?php
var_dump(date_sun_info(strtotime("2017-06-21"), 90, 0));
?>
The above example will output:
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)
}
See Also
- date_sunrise() - Returns time of sunrise for a given day and location
- date_sunset() - Returns time of sunset for a given day and location
English translation
You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.
Thank you in advance.
Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-date-sun-info.html
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.
