Kiwi Christmas

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Across
  1. 3. traffic disruption often occurring in the evenings, abbrv.
  2. 4. Board whose sales peak in the summer
  3. 5. Luxon carried its flag and it carries New Zealand’s, for short
  4. 7. pesky meteorological occurrence which is correlated with increased crime rates
  5. 10. Inconspicuous dangers in beach shores
  6. 11. Ideally done off someplace high
  7. 13. Chilly bin, in Sydney
  8. 15. ACT’s Van Velden
  9. 17. Personification and continental crust
  10. 18. Local time zone, abbrv.
  11. 20. Te Herenga Waka, for short
  12. 21. Full on Christmas Day?
Down
  1. 1. An American might be offended when you ask to borrow theirs for this puzzle
  2. 2. Endonym for an Otago student
  3. 6. Workplace safety agency
  4. 7. its results come out on 15 January
  5. 8. Yeah, right
  6. 9. Ours was never found in the Parliament offices, disappointingly?
  7. 12. Painter Hammond
  8. 14. Tree species whose fruit is a favourite of the Kākāpō
  9. 16. Popular southern New Years’ festival, abbrv.
  10. 19. 2021 Lorde album