[ruby-core:82405] [Ruby trunk Feature#13822] Time.dst_changes(t=Time.now.year)

[ruby-core:82405] [Ruby trunk Feature#13822] Time.dst_changes(t=Time.now.year)

[inform]

Issue #13822 has been reported by opti (Andreas Opti).

----------------------------------------
Feature #13822: Time.dst_changes(t=Time.now.year)
https://bugs.ruby-lang.org/issues/13822

* Author: opti (Andreas Opti)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
output [time1,time2] of daysaving-changes of given year

I assume the result does not depend on timezone, 
only the output will be in default timezone.




-- 
https://bugs.ruby-lang.org/

[ruby-core:82424] [Ruby trunk Feature#13822][Feedback] Time.dst_changes(t=Time.now.year)

[nobu]

Issue #13822 has been updated by nobu (Nobuyoshi Nakada).

Status changed from Open to Feedback

What are `time1` and `time2`?
If `time1` is the time when DST starts at and `time2` is the time when it ends at, then `time1 > `time2` in the Southern Hemisphere?
And what will return in non-DST timezones?

----------------------------------------
Feature #13822: Time.dst_changes(t=Time.now.year)
https://bugs.ruby-lang.org/issues/13822#change-66232

* Author: opti (Andreas Opti)
* Status: Feedback
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
output [time1,time2] of daysaving-changes of given year

I assume the result does not depend on timezone, 
only the output will be in default timezone.




-- 
https://bugs.ruby-lang.org/

[ruby-core:82607] [Ruby trunk Feature#13822] Time.dst_changes(t=Time.now.year)

[naruse]

Issue #13822 has been updated by naruse (Yui NARUSE).


Usually Ruby itself doesn't have such information by itself.
It just calls localtime(3).

If you want to have information related timezone database, you should use tzinfo.gem.
https://rubygems.org/gems/tzinfo

----------------------------------------
Feature #13822: Time.dst_changes(t=Time.now.year)
https://bugs.ruby-lang.org/issues/13822#change-66430

* Author: opti (Andreas Opti)
* Status: Feedback
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
output [time1,time2] of daysaving-changes of given year

I assume the result does not depend on timezone, 
only the output will be in default timezone.




-- 
https://bugs.ruby-lang.org/

[ruby-core:90468] [Ruby trunk Bug#13822] Time.dst?

[andrew_kim_2016]

Issue #13822 has been updated by kronikus (ANDREY KIM).

Tracker changed from Feature to Bug
Subject changed from Time.dst_changes(t=Time.now.year) to Time.dst?
ruby -v set to ruby 2.4.3p205 (2017-12-14 revision 61247) [x86_64-linux]
Backport set to 2.4: UNKNOWN, 2.5: UNKNOWN

Is it bug or feature?
Receiving same result for Time.dst? method.
I belive it suppose to base it response on date in variable, correct me if i'm wrong.
Receiving it in Rails 5.1.2, but Time class is in ruby core

gems tzinfo, tzinfo-data are in Gemfile

Time zone configured in rails config: 
2.4.3 :001 > Time.zone
 => #<ActiveSupport::TimeZone:0x000055ac84e61410 @name="Eastern Time (US & Canada)", @utc_offset=nil, @tzinfo=#<TZInfo::DataTimezone: America/New_York>>

2.4.3 :013 > t
 => 2018-12-12 10:00:00 -0500
2.4.3 :014 > a
 => 2018-08-01 10:00:00 -0500
2.4.3 :015 > t.dst?
 => false
2.4.3 :016 > a.dst?
 => false
2.4.3 :017 > t.isdst
 => false
2.4.3 :018 > a.isdst
 => false


----------------------------------------
Bug #13822: Time.dst?
https://bugs.ruby-lang.org/issues/13822#change-75626

* Author: opti (Andreas Opti)
* Status: Feedback
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.4.3p205 (2017-12-14 revision 61247) [x86_64-linux]
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN
----------------------------------------
output [time1,time2] of daysaving-changes of given year

I assume the result does not depend on timezone, 
only the output will be in default timezone.




-- 
https://bugs.ruby-lang.org/

[ruby-core:90470] [Ruby trunk Feature#13822] Time.dst_changes(t=Time.now.year)

[shyouhei]

Issue #13822 has been updated by shyouhei (Shyouhei Urabe).

Tracker changed from Bug to Feature
Subject changed from Time.dst? to Time.dst_changes(t=Time.now.year) 
ruby -v deleted (ruby 2.4.3p205 (2017-12-14 revision 61247) [x86_64-linux])
Backport deleted (2.4: UNKNOWN, 2.5: UNKNOWN)

Be advised: Please do not reuse existing tickets to report something completely different.

Also be advised: please do understand that this is not where ActiveSupport::TimeZone issue should be reported.

----------------------------------------
Feature #13822: Time.dst_changes(t=Time.now.year) 
https://bugs.ruby-lang.org/issues/13822#change-75628

* Author: opti (Andreas Opti)
* Status: Feedback
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
output [time1,time2] of daysaving-changes of given year

I assume the result does not depend on timezone, 
only the output will be in default timezone.




-- 
https://bugs.ruby-lang.org/