Across
- 3. — a device that tells time using the sun’s shadow
- 5. — an extremely long geological time period
- 7. — a period of a person's life or history
- 9. — a period of 100 years
- 10. — a system for organizing days, weeks, and months
- 11. — a period of 7 days
- 13. year — a year with 366 days
- 14. — the longest or shortest day of the year
- 15. — one of the four parts of the year
Down
- 1. — one thousandth of a second
- 2. — a unit of time, about 30 days
- 4. month — one cycle of the Moon, about 29 days
- 6. — a period of 10 years
- 8. — a period of 1000 years
- 12. — a day when day and night are equal