The "Sunshine Protection Act of 2025" aims to establish permanent daylight saving time across the United States, effectively eliminating the need to change clocks twice a year. This bill repeals the provision allowing for standard time and adjusts time zone calculations accordingly. States that previously opted out of daylight saving time are given the option to choose between the new permanent daylight saving time or the previous standard time. The act also updates cross-references to ensure legal consistency with these changes.