time measurement

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Across
  1. 3. a period of 1000 years.
  2. 4. a period of time, usually consists of 3 monthes.
  3. 5. the fourth day.
  4. 9. a period of 10 years.
  5. 11. the fifth day.
  6. 12. the first day.
Down
  1. 1. the third day.
  2. 2. a period of 100 years.
  3. 3. a period of 30 days.
  4. 5. the sixth day.
  5. 6. a period of seven days.
  6. 7. the last day.
  7. 8. the second day.
  8. 9. a period of 24 hours.
  9. 10. a period of 365 days.