Multiple choice general knowledge

Name the London borough and Royal Observatory site which marks international time?

  1. Redding

  2. Crystal Rocks

  3. Browning Street

  4. Greenwich

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Greenwich is the London borough where the Royal Observatory is located, and it marks the Prime Meridian (0° longitude) which is the reference point for Greenwich Mean Time (GMT) and international timekeeping. The observatory was established in 1675 and the Prime Meridian line runs through it. This is why world time is measured relative to Greenwich.