Issue #19096 has been updated by andrykonchin (Andrew Konchin). @zverok Thank you for pointing at the original ticket. TBH I was waiting so long for some official confirmation because I haven't found any mentioning that https://bugs.ruby-lang.org/issues/17544 affects not only `Time#strftime` method but also a way how `utc offset` argument (in Time construction methods) is handled. Even [added tests](https://bugs.ruby-lang.org/projects/ruby-master/repository/git/revisions/9ef...) don't check this behaviour. ---------------------------------------- Misc #19096: [Question] Time with `-00:00` offset is in UTC https://bugs.ruby-lang.org/issues/19096#change-101536 * Author: andrykonchin (Andrew Konchin) * Status: Open * Priority: Normal ---------------------------------------- It's a bit unexpected but ```ruby Time.new(2022, 1, 1, 0, 0, 0, "-00:00").utc? # => true ``` But time with `+00:00` or `0` offset is treated as not UTC time: ```ruby Time.new(2022, 1, 1, 0, 0, 0, "+00:00").utc? # => false Time.new(2022, 1, 1, 0, 0, 0, 0).utc? # => false ``` Is it an intentional behaviour? In this case could you please clarify the reason why it works this way? --- ``` ruby -v ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) ``` -- https://bugs.ruby-lang.org/