The months of the year.

12345678910111213
Across
  1. 4. May
  2. 6. April
  3. 7. February
  4. 8. November
  5. 9. March
  6. 12. January
  7. 13. September
Down
  1. 1. December
  2. 2. July
  3. 3. December
  4. 5. June
  5. 10. August
  6. 11. October