Months and ordinal numbers

12345678
Across
  1. 3. first month of Winter
  2. 5. 12th
  3. 7. 15th
Down
  1. 1. first month of Summer
  2. 2. second month of Autumn
  3. 4. third month of Spring
  4. 6. 1st
  5. 8. 3rd