I'll set this bug as affecting php package, since this tzdata change is modifying the behaviour of php timezone.
## REPRODUCER ## ubuntu@trusty:~# sudo ln -sf /usr/share/zoneinfo/America/Godthab /etc/localtime ubuntu@trusty:~# reboot ubuntu@trusty:~# ls -altr /etc/localtime lrwxrwxrwx 1 root root 35 Nov 29 10:34 /etc/localtime -> /usr/share/zoneinfo/America/Godthab ubuntu@trusty:~# date Wed Nov 29 11:01:30 -03 2017 ubuntu@trusty:~# php /tmp/php_tz.php America/Sao_Paulo #/tmp/php_tz.php : <?php $script_tz = date_default_timezone_get(); echo $script_tz; ?> - Eric ** Also affects: php5 (Ubuntu) Importance: Undecided Status: New ** Also affects: php7.0 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to tzdata in Ubuntu. https://bugs.launchpad.net/bugs/1734967 Title: tzdata info for WGT/WGST broken Status in php5 package in Ubuntu: New Status in php7.0 package in Ubuntu: New Status in tzdata package in Ubuntu: Invalid Bug description: Using "America/Godthab" timezone, "WGT/WGST" is no longer displayed from date command but instead just "-03". Problem is evident in PHP applications too, which now think we're in Sao Paolo. This appears to have changed with latest tzdata update or perhaps in combination with change from DST. Same problem on 16.04, 17.10 and Debian 9. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1734967/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp