Permanent daylight standard time would be ideal.
BC got it wrong choosing daylight savings time. Daylight standard time is the overall healthier option. Saw an interview with one of their own science advisors explaining why standard would be the best choice, and expressing his dismay at seeing the government completely ignore that recommendation.
Also this has been studied plenty:
https://med.stanford.edu/news/all-news/2025/09/daylight-saving-time.html
