Canadian health researchers are urging the country to choose permanent standard time over permanent daylight saving time if it ends the twice-yearly clock change, warning that darker winter mornings could harm sleep and mental health.
As Canadian provinces consider whether to abandon the twice-yearly clock change, Lam et al. argue that permanent standard time would be better for public health than keeping daylight saving time year-round. Image credit: ChadoNihi.
Several Canadian jurisdictions have been moving toward permanent daylight saving time after eliminating seasonal clock changes.
Yukon adopted the policy in 2020, followed by British Columbia in March 2026 and Alberta and the Northwest Territories a month later.
