US House Passes Sunshine Protection Act, Debates Time Zones

Earlier this week, the U.S. House of Representatives passed the "Sunshine Protection Act" by a 308-117 margin, a legislative move that, if enacted, would end the practice of semiannual clock-changing and establish permanent Daylight Saving Time across the nation. This legislation represents a step towards simplifying timekeeping, but the author argues it does not go far enough by failing to address the existence of time zones.

Historically, timekeeping was localized, with cities observing their own solar time, leading to over 300 "sun zones" in the U.S. alone before the 19th century. The proliferation of railways necessitated standardization to prevent scheduling conflicts and accidents, resulting in the introduction of Standard Railway Time in 1883, which laid the groundwork for the current five U.S. time zones (excluding Hawaii) enacted into law in 1918 via the Standard Time Act.

The author proposes the adoption of Coordinated Universal Time (UTC), also known as Greenwich Mean Time, as a superior alternative to the current time zone system. Under UTC, all watches in the United States would display the same time, regardless of geographical location. The primary observable difference would be the sun's position in the sky at a given hour, rather than the time displayed on a clock. For instance, midday in New York would align with 17:00 UTC, and in San Francisco, it would be 20:00 UTC, fundamentally altering clock times while maintaining solar noon as the highest point of the sun in the sky.