Across
- 2. before Christ
- 3. period of ten years
- 5. study of past events
- 8. period of a thousand years
- 12. period of a hundred years
- 13. 365 days
Down
- 1. 28-31 days
- 2. before common era
- 4. 24 hours
- 6. line used to tell dates and events
- 7. 7 days
- 9. 60 seconds
- 10. period of time
- 11. 60 minutes
- 12. Common Era