Time Designations

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Across
  1. 2. a religious designation for the time before the birth of Jesus Christ
  2. 3. a religious designation for the time after the birth of Jesus Christ
  3. 4. a non-religious or secular designation for the time before the birth of Jesus Christ
  4. 6. meaning around or about
Down
  1. 1. a time period of 10 years
  2. 5. a time period of 100 years
  3. 6. a non-religious or secular designation for the time