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#Rails にタイムゾーンが設定されていない場合に Time.use_zone とで一時的にタイムゾーン指定を有効にする : UTC VS JST

Last updated at Posted at 2019-11-28

日本時間 16:46 に実行した例

UTC


Time.zone.parse('2020-01-01 00:00')
# => Wed, 01 Jan 2020 00:00:00 UTC +00:00
Time.current
# => Thu, 28 Nov 2019 07:46:28 UTC +00:00
Time.zone.now
# => Thu, 28 Nov 2019 07:46:28 UTC +00:00

JST

Time.use_zone("Tokyo") { Time.zone.parse('2020-01-01 00:00') }
# => Wed, 01 Jan 2020 00:00:00 JST +09:00
Time.use_zone("Tokyo") { Time.current }
# => Thu, 28 Nov 2019 16:46:28 JST +09:00
Time.use_zone("Tokyo") { Time.zone.now }
# => Thu, 28 Nov 2019 16:46:28 JST +09:00

Original by Github issue

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