Time travel

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Across
  1. 3. There are sixty of them in each hour
  2. 5. It's small and tells the time
  3. 7. Go from one place to the other
Down
  1. 1. Not the past, not the future
  2. 2. To time travel, you have to be...
  3. 4. The day before sunday
  4. 6. Twenty four hours