Translation guide
The practice of advancing clocks during warmer months so that darkness falls later each day. In Japanese, this is a borrowed concept expressed with a set phrase.
Referring to daylight saving time as a concept or system.
Talking about the time of year when daylight saving time is active.
Means 'the period of daylight saving time'.
夏時間の期間中は、日本との時差が1時間短くなります。
During daylight saving time, the time difference with Japan is reduced by one hour.
Daylight saving time is not currently used in Japan, so the concept may be unfamiliar to some. When explaining, you might need to describe it as 'summer time' used in other countries.
日本には夏時間がありますか？
Does Japan have daylight saving time?
夏時間のために時計を変えるのをいつも忘れます。
I always forget to change my clocks for daylight saving time.
The standard term for daylight saving time. Literally 'summer time'.
アメリカでは夏時間が実施されています。
Daylight saving time is observed in the United States.
Common loanword from English 'summer time'. Often used in casual conversation.
サマータイムが始まると、時計を1時間進めます。
When daylight saving time starts, we set the clocks forward one hour.
Direct loanword from English 'daylight saving time'. Less common and may not be understood by all speakers.
デイライトセービングタイムは日本では採用されていません。
Daylight saving time is not adopted in Japan.
Casual way to say 'during daylight saving time'.
サマータイム中は、夜の9時でもまだ明るいです。
During daylight saving time, it's still light at 9 p.m.