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
The exact length of an apparent solar day varies slightly during the year.
From Textbooks • Oct. 13, 2016
The sidereal day and the mean solar day necessitate some means of registering time, such as clocks; therefore the original day in use must have been the apparent solar day.
From The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture by Maunder, E. Walter (Edward Walter)
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.
