Ordinal numbers

1234567891011121314151617
Across
  1. 3. 1st
  2. 6. 6th
  3. 10. 20th
  4. 12. 11th
  5. 13. 5th
  6. 14. 19th
  7. 16. 3rd
  8. 17. 9th
Down
  1. 1. 15th
  2. 2. 4th
  3. 4. 30th
  4. 5. 18th
  5. 7. 14th
  6. 8. 13th
  7. 9. 12th
  8. 11. 2nd
  9. 15. 10th