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Preface
Astronomical data in mean solar time
A universal calendar for the twentieth century
List of authorities on the Gregorian calendar
Part I: 1. The measurement of time, natural units, day, year, month
2. The three possible forms of calendar
3. The Greek calendar. Metonic cycle
4. The Latin calendar
5. The Julian reform
6. Month and day in the Roman calendar
7. The Gregorian calendar
8. Other calendars - Jewish, Mahometan, French republican
9. The week
10. The Dominical or Sunday letter
Part II: 11. Cycles. The Metonic cycle. The solar cycle. Indiction
12. Eras. Olympiad, era of Rome, etc.
13. The Christian era. Dates of nativity and crucifixion
14. The Julian period
Part III: 15. The date of Easter
Part IV: 16. The uses of the calendar
17. The defects of the calendar
18. How its defects may be remedied
Index.