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.
Yes, year-round standard time ensures that the solar day is centered on 12 p.m.
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
Most people’s natural cycle is somewhat longer than the 24-hour solar day, which means that, left to our own devices, we would quickly get out of sync with the external world.
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 sun makes a similar but still lower pair of low elevations to travel round once in a solar day of 24 hours.
From Pioneers of Science by Lodge, Oliver, Sir
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.
