Bug #53148 [Asn->Opn]: date_sunrise and date_sunset show tomorrow's times for some timezones.

Edit report at https://bugs.php.net/bug.php?id=53148&edit=1 ID: 53148 Updated by: kalle@php.net Reported by: sec at mboca dot com Summary: date_sunrise and date_sunset show tomorrow's times for some timezones. -Status: Assigned +Status: Open Type: Bug Package: Date/time related Operating System: linux and windows PHP Version: 5.2.14 and 5.3.3 -Assigned To: derick +Assigned To: Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2013-10-28 22:14:00] phpnet at stanton dot co dot nz PHP 5.3.15 Also has this issue though I don't believe it is related to the timezone being +12 or over Keeping the timezone the same I changed the longitude value from 175 to 180 in 0.25 increments and found the sunrise/set values jump to the next day at different longitudes according to the time of the year. Checking for the sunrise time on Oct 1st 2013 10:35 (NZ summer time) at longitude 177.25 gets 2013-10-01T06:45:18+13:00 but shift the longitude to 177.5 at the sunrise is reported as 2013-10-02T06:44:18+13:00 Checking for the sunrise time on Oct 31st 2013 10:35 (NZ standard time) at longitude 175.75 gets 2013-10-31T06:09:32+13:00 but shift the longitude to 176 at the sunrise is reported as 2013-11-01T06:08:32+13:00 ------------------------------------------------------------------------ [2010-10-31 10:32:15] sec at mboca dot com I figured out a workaround to this bug. you have to add -1 day to subtract one day from sunrise and sunset times. if ($offset >= 12 && strcmp(date_default_timezone_get(), "Pacific/Tarawa") != 0) { echo "+12 GMT workaround done<br>"; $sunrise = strtotime('-1 day', $sunrise); $sunset = strtotime('-1 day', $sunset); $csunrise = strtotime('-1 day', $csunrise); $csunset = strtotime('-1 day', $csunset); $nsunrise = strtotime('-1 day', $nsunrise); $nsunset = strtotime('-1 day', $nsunset); $asunrise = strtotime('-1 day', $asunrise); $asunset = strtotime('-1 day', $asunset); } I need to test on time zones that are -12 in offsets might have to do +1 day on that offset. ------------------------------------------------------------------------ [2010-10-28 06:33:38] sec at mboca dot com It happens on php 5.3.3 too. ------------------------------------------------------------------------ [2010-10-28 06:32:07] sec at mboca dot com This bug also happens on php 5.3.3 with same configure line in my post above. ------------------------------------------------------------------------ [2010-10-25 03:44:01] sec at mboca dot com Description: ------------ when you try to get sunrise and sunset times from the area that have GMT +12 or over. the sunrise and sunset times will be listed for next day. The sunrise and sunset times should be listed for today. http://weatherpixel.com/bug.php the source code is at http://weatherpixel.com/bug.php?src=show one of the examples that the Fiji Island times would only show for tomorrow and my script would show it as night as always. http://weatherpixel.com/sunrise_gmt.php?station=NFFN Here is my configure line for linux: ./configure --enable-sockets --enable-calendar --with-curl=/usr/lib/ --with-gd --with-jpeg-dir=/usr/local/lib --with-png-dir=/usr/local/lib --with-ttf --enable-gd-native-ttf --with-gettext --with-freetype-dir=/usr/local/lib --without-sqlite --without-pdo-sqlite --with-apxs2=/usr/local/apache2/bin/apxs Test script: --------------- here is php script that reproduce the date_sunrise http://weatherpixel.com/bug.php?src=show Expected result: ---------------- the times for +12 GMT and more than +12 GMT will always show tomorrow's sunrise and sunset times. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=53148&edit=1