General Navigation USCG Question #2188 (Set 67)

Your longitude is 179°59'W. The LMT at this longitude is 23h 56m of the 4th day of the month. Six minutes later your position is 179°59'E longitude. Your LMT and date is now __________.

Official USCG Answer & Rule Citation

Correct Answer: Option C — 00h 02m on the 6th

Crossing the 180th meridian from west to east advances the calendar date by one full day while local mean time advances continuously. Adding 6 minutes to 23h 56m on the 4th yields 00h 02m, and crossing the International Date Line shifts the date to the 6th.

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