Tables of sunrise, sunset, and twilight
By: issued by the Nautical Almanac Office, United States Naval Observatory under the authority of the Secretary of the Navy.
Series: Its American ephemeria, 1946.  Supplement
Publisher: U. S. Govt. Print. Off.
Published: 1945
Place of publication: Washington
Language: eng
Number of pages: 196
Subjects: Twilight.; Sun -- Rising and setting.
Other titles: American ephemeris.