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.
A diurnal flower closes at night; a diurnal motion is precisely coincident with the astronomical day.
From The Century Vocabulary Builder by Joseph M. (Joseph Morris) Bachelor
A vigorous effort was made during the last fifteen years of the 19th century to bring the two uses into harmony by beginning the astronomical day at midnight.
From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 10 "David, St" to "Demidov" by Various
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 John F. Blake
Your correspondent DX. is mistaken in supposing that "foreigners ordinarily commence the astronomical day at midnight."
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 Sir Edward Belcher
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