astronomical day
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.
We may remark that the commencement of the astronomical day commences twelve hours after the civil day.
From Astronomical Myths Based on Flammarions's History of the Heavens by Blake, John F.
A diurnal motion exactly fills an astronomical day or the time of one rotation of a planet on its axis, while a daily motion is much less definite.
From English Synonyms and Antonyms With Notes on the Correct Use of Prepositions by Fernald, James Champlin
The astronomical day is reckoned from noon to noon, continuously through the twenty-four hours, like the other days.
From The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. by Belcher, Edward, Sir
A diurnal flower closes at night; a diurnal motion is precisely coincident with the astronomical day.
From The Century Vocabulary Builder by Bachelor, Joseph M. (Joseph Morris)
One of the objects of the third resolution is to make the new universal day coincide with the civil day rather than with the astronomical day.
