solar day
Americannoun
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Astronomy. the time interval between two successive transits by the sun of the meridian directly opposite that of the observer; the 24-hour interval from one midnight to the following midnight.
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Law. the period of time from sunrise to sunset.
noun
Etymology
Origin of solar day
First recorded in 1755–65
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Year-round daylight saving, not standard, time would keep our internal clocks aligned with society, placing the middle of the solar day at 1 p.m., the middle of our workday.
From Washington Post ● Nov. 8, 2022
Yet in 2020 there were 28 separate occasions in which a solar day occurred from anywhere between 1.0516 milliseconds and 1.4602 milliseconds less than that period.
From Salon ● Jan. 8, 2021
The reason we don’t all walk around in a state of perpetual jet lag, waking and sleeping at random, is that our circadian rhythm evolved to be tied to the solar day.
From New York Times ● Mar. 10, 2017
For many years it was defined as 1/86,400 of a mean solar day.
From Textbooks ● Aug. 12, 2015
The solar day is thus one of twenty-four hours.
From Astronomy for Amateurs by Frances A. (Frances Alice) Welby
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
