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 Bachelor, Joseph M. (Joseph Morris)

The civil day always commences at the midnight preceding this astronomical day.

From Notes and Queries, Vol. IV, Number 105, November 1, 1851 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. by Various

Foreigners, however, ordinarily commence the astronomical day at midnight, at least those of France, Germany, Italy, and Spain do.

From Notes and Queries, Vol. IV, Number 101, October 4, 1851 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. by Various

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

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.

From International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day. October, 1884. Protocols of the Proceedings by Various