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Calculating Time 2


Calculating Time



Ok, so we already know the following:

- 1 hour is 15°
- 1° is 4 minutes
- Add 1 hour when moving to the east
- Minus 1 hour when moving to the West

Here's how to do your calculations

Example 1

If a place is 45°E , then it is ahead of Greenwich Meridian.
If the time is 12 midday at Greenwich what time will it be at 60°E?

Step 1

45°E  = 3 hours ahead of Greenwich
15°E

12 midday plus 3 hours would be 3pm

This could also be done using a number line



Example 2

If a place is 76°E , then it is ahead of Greenwich Meridian.
If the time is 12 midday at Greenwich what time will it be at 60°E?

Step 1

76°E  = 5 hours remaining 1°
15°E

1° equals 4 minutes
therefore  76°E would be 5 hours and 4 minutes ahead of Greenwich

12 midday plus 5 hours and 4 minutes would be 5:04pm


Try the Calculating Time Worksheet. If you have any questions, ask them in the comments below. 

All the Best




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