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34  ARMY AIR FORCES

[[image - sunset graph showing the relationship between sunset and local time for several month]]
Figure 32.—Sunset graph.

d. Sunset graphs.—These graphs enable the pilot to determine the time of sunset for any position on the earth. The 24-hour system of keeping time is used in sunset graphs.

(1) Instructions for use.—(a) Enter the top or bottom scale with proper date.

(b) Move vertically down or up to the curve for observer's latitude (observer's position).

(c) Move horizontally to the right or left and read local civil time of sunset on vertical scales at the side.

(2) Find the sunset time for November 1 at latitude 30° N. (Follow instructions for use.) 1721 hr Answer.

(3) Find the sunset time for May 15 at latitude 50° N.

(4) Find the sunset time for May 20 at latitude 30° N.
1848 hr Answer.

(5) Find the sunset time for June 10 at latitude 10° N.

(6) Find the sunset time for February 10 at latitude 40° N.
1736 hr Answer.

(7) Find the sunset time for October 20 at latitude 30° N.

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Transcription Notes:
[[image: sunset graph showing the relationship between sunset and local time for several months]]