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How to Determine the Time of Sunrise, Sunset, Moonrise,
Moonset, and Twilight
Strip Forms and
OPNAV Navigation Strip Forms have evolved from a need to have a
the Navigation
standard method of working celestial problems. The strip forms are
Workbook
located in the back of the Navigation Workbook (OPNAV 3530/l) and
they are designed to work with the individual pages of the Navigation
Workbook. Every time a celestial observation is taken that fixes the ship’s
position, you must keep a record of the results in the Navigation
Workbook.
How to
Determine the
We will learn how to determine the time of sunrise by using a practical
example. Use the table on the next page and figure 6-4 to work the strip
Time of Sunrise
form.
Figure 6-4. Excerpt from The Nautical Almanac.
6-7
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