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S 2157

An Act relative to Massachusetts time zones and sunshine protection

194th Legislature (2025-2026) Introduced by Christine Barber and 2 co-sponsors

Massachusetts bill seeks to modify state time zone observance, potentially establishing permanent daylight saving time to address public health and economic concerns from biannual clock changes.

Accompanied a study order, see S2850
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Bill Summary · S 2157

Legislative bill overview

S 2157 proposes to change Massachusetts' time zone observance and daylight saving time practices. The bill aims to address the "sunshine protection" issue—the biannual clock changes that affect public health, safety, and economic activity. This legislation would likely establish Massachusetts on permanent daylight saving time or another modified time arrangement.

Why is this important

Time zone changes affect sleep schedules, workplace safety, and circadian rhythms, with documented increases in heart attacks and vehicle accidents during transitions. The bill reflects growing national momentum to eliminate biannual clock changes, as multiple states have already adopted permanent daylight saving time or sought federal authorization to do so. For Massachusetts, this could influence regional coordination since neighboring states have different time policies.

Potential points of contention

  • Federal law constraints: The Uniform Time Act generally prohibits permanent daylight saving time unless Congress amends federal law; Massachusetts would likely need federal approval or must adopt permanent standard time instead
  • Regional alignment: Unilateral action could create scheduling complications for Massachusetts businesses, transportation, and residents interfacing with neighboring states on different time schedules
  • Economic and health trade-offs: Studies show mixed results on whether permanent daylight saving or standard time better serves public health, with disputes over reduced evening daylight hours versus morning darkness in winter months

Compiled from official sources — confirm details with the bill’s official record.

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