Issue #6491 has been updated by tadf (tadayoshi funaba). Status changed from Assigned to Rejected Priority changed from Normal to Low i don't know how to determine such a name. moreover, GMT is already dead. this is not a bug, not an incorrect format. ---------------------------------------- Bug #6491: DateTime.strftime('%Z') output is incorrect format https://bugs.ruby-lang.org/issues/6491#change-26831 Author: zombor (Jeremy Bush) Status: Rejected Priority: Low Assignee: tadf (tadayoshi funaba) Category: Target version: ruby -v: ruby 1.9.3p125 (2012-02-16 revision 34643) [x86_64-darwin11] DateTime.parse('2012/05/23').strftime('%Z') should output 'GMT' (or a similar string). It outputs "+00:00" (or a similar offset string). -- http://bugs.ruby-lang.org/