I have compile the php upstream source code from : https://github.com/php/php-src
# php --version PHP 7.3.0-dev (cli) (built: Nov 30 2017 14:52:31) ( NTS ) Copyright (c) 1997-2017 The PHP Group Zend Engine v3.3.0-dev, Copyright (c) 1998-2017 Zend Technologies # date Thu Nov 30 12:23:30 -03 2017 #php php_tz.php UTC I'll do a bisection, and will update the bug. - Eric -- 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