On 16 August your 1600 ZT DR position is LAT...

Question 1 of 2707066636eea28f7522a1c51ab07

On 16 August your 1600 ZT DR position is LAT 26°17.0'N, LONG 165°17.0'E. You are on course 301°T at a speed of 15 knots. What will be the zone time of sunset at your vessel?

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Question 1 of 27070

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On 16 August your 1600 ZT DR position is LAT 26°17.0'N, LONG 165°17.0'E. You are on course 301°T at a speed of 15 knots. What will be the zone time of sunset at your vessel?

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🔍 Key Concepts

• Zone time vs GMT/UT and how to convert between them • How to determine the correct time zone description (ZD) from a DR longitude • Using the Nautical Almanac sunset tables for a given latitude, date, and LHA of the Sun

💭 Think About

• From the DR longitude, what is the correct ZD sign and value for 165°17.0'E if your date/time is given in zone time? • Once you find the approximate GMT of sunset from the Nautical Almanac for 16 August at about 26°N, how do you convert that to the local zone time at the ship? • Is your vessel east or west of the central meridian for its time zone, and how might that affect the exact minute you select from the choices?

✅ Before You Answer

• Confirm the correct ZD for 165°17.0'E (make sure the sign and number of hours match the longitude) • Check that you are using 16 August data in the Nautical Almanac, not a different date or column • After you convert from GMT to ZT, verify that the date and time still make sense for a typical tropical sunset time in August (not too early, not too late)