day-light saving timeとは 意味・読み方・使い方

別の表記

• daylight-saving time, daylight savings time, daylight saving, daylight savings, daylight time

発音

名詞

daylight saving time (countable and uncountable, plural daylight saving times)

1. The practice in some places of adjusting clocks forward in the spring and back in the fall, usually by one hour, so that the adjustment causes the time to coincide with the greatest period of illumination by the sun over the course of the day.

   Synonym: summer time (UK)

   Coordinate terms: put the clock back, put the clock forward, time zone

   Hyponym: War Time (US, historical)

   • 2005: answers.firstgov.gov -- Daylight Saving Time is a change in the standard time of each time zone. ... The American law by which we turn our clock forward in the spring and back in the fall is known as the Uniform Time Act of 1966. The law does not require that anyone observe Daylight Saving Time; all the law requires is that if we are going to observe Daylight Saving Time, it must be done uniformly. [1]

使用する際の注意点

• The hyphenated form daylight-saving time is grammatically preferable, as daylight-saving functions as a compound adjectival modifier of time. The AP Stylebook and the University Style Guide (of The University of Southern Mississippi) both require this hyphenated form. Daylight Saving Time, without the hyphen, is the official name in the United States. See also the usage notes at daylight savings time with an "s" after "saving".

参考

Further reading

• daylight saving time on Wikipedia.Wikipedia