Across
- 2. satellited that travels around Earth
- 3. the Earth takes 365 days to travel around this
- 5. worked out the 'amount' of something
- 7. twelve months
- 8. when the part of Earth we live in is not facing sun
Down
- 1. thing used for measuring
- 4. twenty four hours
- 6. one of the first instruments to measure time
- 9. sixty minutes