Celestial Navigation · Time — Zone Time from GMT
GMT is 1800 and your zone description is +5 (west longitude). What is the local zone time?
- A1300✓ Correct
- B2300
- C1800
- D1305
Explanation
Zone time = GMT − zone description = 1800 − 5h = 1300. To go from GMT to local zone time you reverse the ZD application: subtract a positive (west) ZD.
Authority: Bowditch (Pub. No. 9), Time
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