CA SB51

Repeals daylight saving time in California, requiring the state and all political subdivisions to observe year-round Pacific standard time instead of changing clocks twice per year

Exempts California from the federal Uniform Time Act provisions that establish the advancement of time for daylight saving

Cites health, safety, and education concerns from organizations including the California Medical Association and American Academy of Sleep Medicine, which recommend permanent standard time over permanent daylight saving time

Notes that federal law permits states to opt out of daylight saving time by exemption, making permanent standard time the only legal alternative to biannual clock changes without federal authorization

Requires a two-thirds legislative vote to pass, as it amends provisions established by Proposition 7, which voters approved in November 2018