Who invented 24 hour time?

Related questions

1. Is Singapore and Hong Kong same time zone?
2. Why does the time change in Singapore?
3. What is the biggest time difference between two countries?
4. How do you tell 24 hour time?
5. Do HONG KONG change their clocks?
6. What time zone does Hong Kong use?
7. Is Singapore bigger than Hong Kong?
8. Does Singapore change time?
9. What time is it in Hong Kong and London?
10. Is it 2400 hours or 0000?

Tags

1. #devices
2. #another
3. #night
4. #egyptians
5. #shadow
6. #hours
7. #ancient
8. #added
9. #twilight
10. #beginning
11. #stars
12. #based
13. #divided
14. #observations
15. #comes
16. #clocks
17. #measured