Nish, Sorry if I didn't mention it earlier but I am able to reproduce in debian/unstable and ubuntu/bionic with php7.1.
# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu Bionic Beaver (development branch) Release: 18.04 Codename: bionic # rmadison php7.1 php7.1 | 7.1.11-0ubuntu2 | bionic | source, all # dpkg (php7.1) ii php7.1 7.1.11-0ubuntu2 all server-side, HTML-embedded scripting language (metapackage) ii php7.1-cli 7.1.11-0ubuntu2 amd64 command-line interpreter for the PHP scripting language ii php7.1-common 7.1.11-0ubuntu2 amd64 documentation, examples and common module for PHP ii php7.1-json 7.1.11-0ubuntu2 amd64 JSON module for PHP ii php7.1-opcache 7.1.11-0ubuntu2 amd64 Zend OpCache module for PHP ii php7.1-readline 7.1.11-0ubuntu2 amd64 readline module for PHP ## dpkg (tzdata) ii tzdata 2017c-1 all time zone and daylight-saving time data # php --version PHP 7.1.11-0ubuntu2 (cli) (built: Nov 7 2017 09:01:09) ( NTS ) # php /tmp/tz.php America/Sao_Paulo The tz bundle update [8e32603] has been first introduced in "php-7.1.12". -- 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 php7.1 package in Ubuntu: New Status in tzdata package in Ubuntu: Invalid Status in php7.0 package in Debian: New 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