Birthday boy

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Across
  1. 3. Break open under pressure
  2. 4. Maker of bread, perhaps, seen with cap
  3. 10. Rule without delay, perhaps
  4. 13. In the air, oddly climbing, the old passage
  5. 14. Brief moment of light or brilliance
  6. 15. Stockpile misplaced—time to find underground space
  7. 18. Beard’s finally grown into a new look
  8. 19. A little rest for a rich person
  9. 21. Power source, initially untested, not standing still
  10. 22. Advancing on the ladder, taking charge
Down
  1. 1. Garden Leading outdoor space, initially set before hedge
  2. 2. Cover up planet in final phase
  3. 5. Fasten in place, first class
  4. 6. Warm cover for bed, especially on vacation
  5. 7. Arrange clothing for function
  6. 8. Polish rough edges of stone
  7. 9. Tiny skirt cut short
  8. 11. It’s new, probably confused with place or part
  9. 12. Turned around small object
  10. 16. Eager to get involved in smart campaign
  11. 17. Fluff found in old magazines
  12. 20. Conflict between two forces