Translation guide
The practice of advancing clocks during warmer months so that darkness falls later. In Japanese, this is typically expressed with the borrowed term サマータイム or the descriptive phrase 夏時間.
Referring to daylight saving time as a practice or system.
The most common and widely understood term. Borrowed from English 'summer time'.
日本ではサマータイムは導入されていません。
Daylight saving time is not implemented in Japan.
A more literal Japanese term meaning 'summer time'. Used in formal or written contexts.
夏時間は3月の第2日曜日に始まります。
Daylight saving time starts on the second Sunday in March.
A direct transliteration of 'daylight saving time'. Rarely used and may not be understood by all speakers.
アメリカではデイライトセービングタイムが実施されています。
Daylight saving time is observed in the United States.
Referring to the time of year when daylight saving time is active.
Means 'daylight saving time period'. Natural way to refer to the duration.
サマータイム期間中は時計を1時間進めます。
During daylight saving time, we set the clocks forward one hour.
A more formal equivalent using the Japanese term.
夏時間の期間は国によって異なります。
The period of daylight saving time varies by country.
Describing the act of moving clocks forward or back for daylight saving time.
Literally 'advance the clock by one hour'. Used when starting daylight saving time.
今夜、寝る前に時計を1時間進めてください。
Please set your clock forward one hour before going to bed tonight.
Literally 'set the clock back by one hour'. Used when ending daylight saving time.
サマータイムが終わったら、時計を1時間戻します。
When daylight saving time ends, we set the clocks back one hour.
サマータイム is the default in everyday conversation. 夏時間 is more formal and often appears in official documents or news. Both are understood, but サマータイム is more natural for learners.
サマータイムって知ってる？
Do you know about daylight saving time?