Bug #21141: `Time#utc?` does not work with a timezone object

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 3.1: REQUIRED, 3.2: REQUIRED, 3.3: DONE, 3.4: DONE

[nobu (Nobuyoshi Nakada)]

require 'timezone'
require 'tzinfo'

t = Time.now(in: "UTC")
t_timezone = Time.now(in: Timezone["UTC"])
t_tzinfo = Time.now(in: TZInfo::Timezone.get("UTC"))
p t.utc?          #=> true
p t_timezone.utc? #=> false
p t_tzinfo.utc?   #=> false

This also affects strftime("%-z").

[nobu (Nobuyoshi Nakada)]

Maybe also this is related:

ENV["TZ"] = "UTC"
p Time.now.utc? #=> false

Is it expected?
In other words, is that Time#utc? is true a special case, only when the time is created with the methods such as Time.utc, Time#utc, etc, that clearly return a UTC time object?

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset commit:git|06919949a60b42a8f30e8bd0cb075e17b05eebcd.

---

[Bug #21141] [DOC] Clarify what time is in UTC

[maximecb (Maxime Chevalier-Boisvert)]

Should we backport this minor doc change?

[alanwu (Alan Wu)]

• Backport changed from 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED to 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED, 3.4: DONE

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED, 3.4: DONE to 3.1: REQUIRED, 3.2: REQUIRED, 3.3: DONE, 3.4: DONE

ruby_3_3 commit:4ca521e91342165ed35cb12c9868f10e2a6aa07c merged revision(s) commit:06919949a60b42a8f30e8bd0cb075e17b05eebcd, commit:51bc992822f9108ad64de32d300e1cefd0e2da59, commit:42daa6c2a2b49b4e45f40736e25c7d182860f24a.