Ordinal numbers from 1st to 20th

12345678910111213141516171819
Across
  1. 5. 15th
  2. 8. 8th
  3. 9. 20th
  4. 10. 3rd
  5. 11. 14th
  6. 12. 17th
  7. 16. 4th
  8. 18. 13th
  9. 19. 9th
Down
  1. 1. 6th
  2. 2. 11th
  3. 3. 16th
  4. 4. 19th
  5. 6. 7th
  6. 7. 5th
  7. 13. 18th
  8. 14. 12th
  9. 15. 1st
  10. 17. 2nd
  11. 18. 10th