Describes the different ways in which we measure time.
1. We Live by the Clock -- And by the Sun
1
(7)
2. How to Make a Sundial
8
(6)
3. Does a Sundial Give Correct Time?
14
(2)
4. Other Kinds of Timekeepers
16
(13)
5. What Is Time?
29
(5)
6. Standard Time and Daylight Saving Time
34
(9)
7. Why Are There 24 Hours in a Day?
43
(4)
8. Why Are There 60 Minutes in an Hour, 60 Seconds in a Minute?
47
(4)
9. How Long Is a Day?
51
(5)
10. Why Are There Seven Days in a Week?
56
(10)
11. What Is the First Day of the Week?
66
(4)
12. Are Days Getting Longer?
70
(3)
13. When and Where Does Each Day Begin?
73
(7)
14. Why Are There 12 Months in a Year?
80
(6)
15. The Gregorian Calendar
86
(4)
16. Time and Space Travel
90
(6)
17. Time in Space, on the Moon, and on the Planets
96
(5)
Bibliography
101
(2)
Index
103
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