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.
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
A mean solar day contains exactly 24 hours and is what we use in our everyday timekeeping.
From Textbooks ● Oct. 13, 2016
So, your internal clock may remain slightly longer than 24 hours, causing you to drift out of sync with the solar day.
From Washington Post
The Second is the time of one swing of a pendulum making 86,164.09 swings in a sidereal day, or 1/86,400 part of a mean solar day.
From The Story of Electricity by John Munro
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