Celestial Navigation · Time — GMT from Zone Time (East)
Zone time is 1500 and your zone description is −3. What is GMT (UT)?
- A0300
- B1800
- C1500
- D1200✓ Correct
Explanation
GMT = zone time + zone description = 1500 + (−3h) = 1200. In east longitude the ZD is negative, so GMT is earlier than local zone time.
Authority: Bowditch (Pub. No. 9), Time
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