With Labor Day behind us, the political calendar is not the only thing shifting into fall. The sun is starting to clock out earlier each evening, and by the end of September, much of the country will have shed more than an hour of daylight compared to now.
While the days technically remain 24 hours long, the shrinking window of sunshine is a seasonal certainty. For many Americans, the change will be most noticeable in the evening: sunset times will begin slipping below 7 p.m. in large portions of the nation, a trend that will hold until spring.
The rate of daylight loss accelerates through September, especially in northern states. Cities like Seattle and Minneapolis will see the most dramatic shifts, with the sun setting nearly 90 minutes earlier by month's end. Even southern metros like Atlanta and Dallas will lose close to an hour of evening light.
This seasonal adjustment is more than a matter of setting watches. It affects everything from commuter safety to energy demand, and it has become a recurring topic in state legislatures and Congress. Some lawmakers are pushing to make daylight saving time permanent, a move that would keep sunsets later in the winter but would not change the total daylight lost in autumn.
Proponents argue that permanent daylight saving would reduce evening car crashes and boost economic activity. Opponents point to darker mornings and potential health risks. The debate has stalled in the Senate, where a push backed by former President Trump has hit a wall among Republicans who worry about disrupting school schedules and rural routines.
For now, the immediate reality is that the countdown to winter has begun. The autumnal equinox arrives on September 22, marking the moment when the sun crosses the celestial equator. After that, the Northern Hemisphere tilts away from the sun, and daylight continues to dwindle until the winter solstice in December.
For those who dread early darkness, the trend is clear: by the last week of September, most of the U.S. will be seeing sunsets before 7 p.m., and some northern cities will be closing the day before 6:30. The shift is gradual but relentless, and it will not reverse until the new year.
In the meantime, permanent daylight saving could push winter sunsets past 7 p.m. if the policy ever clears Congress. But with the legislative calendar crowded by a funding fight and reconciliation hurdles, action is unlikely before the equinox.
So, enjoy the remaining evening light while it lasts. The sun is already on its way out, and September's end will leave many of us reaching for the porch light a little earlier each night.
