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.
On the other hand, those navigators who were in the neighborhood of the 180th meridian would have all their work of one day occurring in the same astronomical day.
The civil day always commences at the midnight preceding this astronomical day.
To find at any hour desired what star will cross your meridian, take the R.A. of the Mean Sun for Greenwich Mean Noon of the proper astronomical day.
From Lectures in Navigation by Draper, Ernest Gallaudet
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.