A past question from NO QUARTZ, the free daily watch quiz. The answer is highlighted below.

Question 1·Multiple choice

On a 'GMT' watch, what do the letters GMT stand for?

  • A.Greenwich Maritime Timer
  • B.General Master Time
  • C.Greenwich Mean TimeCorrect answer
  • D.Global Meridian Time

The story behind it

Greenwich Mean Time is the mean solar time at the Royal Observatory in Greenwich, on longitude 0°. On a GMT watch, an extra hand points to a second time zone on a 24-hour scale while the main hands show local time.

From NO QUARTZ Ref. NQ0005, the puzzle for Sept 27, 2026.

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