跟进：夏令时今晚结束，睡前把时钟拨慢一小时，明早多睡一小时
今晚是今年夏令时的最后一个晚上。据美国交通部（DOT）与国家标准与技术研究院（NIST）的官方口径，全美实行夏令时的地区将在11月1日（周日）凌晨2时结束夏令时，把时钟回拨一小时至凌晨1时，改走标准时间。今晚睡前拨好，明早就能多睡一小时。
本站10月19日已经报道这项安排的要点：夏令时每年3月第二个周日开始、11月第一个周日结束；夏威夷州与亚利桑那州大部分地区（纳瓦霍族保留地除外）以及波多黎各、关岛等属地全年实行标准时间，不参与调整。下一次调表是2027年3月14日凌晨，届时时钟再拨快一小时。
很多人关心这会不会是最后一次调表。截至10月31日，立法方面没有新进展：据国会官网（Congress.gov）记录，众议院今年7月通过的《阳光保护法案》（Sunshine Protection Act，H.R.139）7月15日送抵参议院后，一直停留在参议院商务、科学和交通委员会，没有进一步动作。在法案成为法律之前，一年两次调表的安排不变，今晚这次回拨照常进行。
今晚睡前的实操清单很短：需要手动拨的，主要是老式挂钟、座钟和床头闹钟，以及微波炉、烤箱、咖啡机上的时钟和部分汽车时钟，睡前顺手回拨一小时即可；手机、电脑、平板和智能手表联网后会自动切换，不用管。明早有航班、约会或聚会的，出门前以手机显示的时间为准再核对一遍，以免家里的钟还没拨、看错了时间。
另外，按消防部门的多年惯例，拨钟时可以顺手测试一遍家里的烟雾与一氧化碳报警器：本站今天的另一篇报道里，有威斯康星州应急管理局的详细提醒。
关联：夏令时将于11月1日凌晨结束 全美多数地区时钟回拨一小时 众议院已通过永久夏令时法案
来源：GSM·美国
Follow-Up: Daylight Saving Time Ends Tonight, Set Clocks Back an Hour Before Bed
Tonight is the last night of daylight saving time this year. Under the official guidance of the U.S. Department of Transportation (DOT) and the National Institute of Standards and Technology (NIST), areas that observe daylight time will end it at 2 a.m. on Sunday, November 1, turning clocks back one hour to 1 a.m. and returning to standard time. Set your clocks before bed tonight and you gain an extra hour of sleep in the morning.
GSM set out the key points on October 19: daylight time begins on the second Sunday in March and ends on the first Sunday in November; Hawaii, most of Arizona (except the Navajo Nation) and territories including Puerto Rico and Guam stay on standard time year-round and do not change their clocks. The next change comes on March 14, 2027, when clocks spring forward again.
Many readers ask whether this could be the last clock change. As of October 31, there is no new movement on the legislation: according to Congress.gov, the Sunshine Protection Act (H.R.139), passed by the House in July, was received in the Senate on July 15 and remains in the Senate Committee on Commerce, Science, and Transportation, with no further action recorded. Until a bill becomes law, the twice-yearly change stays in place, and tonight's fall-back goes ahead as scheduled.
Tonight's checklist is short. Clocks that need a manual reset are mostly older wall and mantel clocks, bedside alarm clocks, the clocks on microwaves, ovens and coffee makers, and some car clocks: turn each one back an hour before bed. Phones, computers, tablets and smartwatches update on their own when connected. If you have a flight, an appointment or a gathering tomorrow morning, double-check the time on your phone before heading out, in case a household clock was missed.
As fire departments have long advised, the clock change is also a good moment to test the smoke and carbon monoxide alarms at home: a GSM report today carries detailed reminders from Wisconsin Emergency Management.
Source: GSM News, America
来源：GSM·美国（原文链接）
图片来源：图：美国交通部总部大楼（华盛顿 1200 New Jersey Ave SE）。照片：AgnosticPreachersKid，CC BY-SA 3.0，经 Wikimedia Commons。 / The U.S. Department of Transportation headquarters (1200 New Jersey Ave SE, Washington). Photo: AgnosticPreachersKid, CC BY-SA 3.0, via Wikimedia Commons.
- 2026-10-19 00:57夏令时将于11月1日凌晨结束 全美多数地区时钟回拨一小时 众议院已通过永久夏令时法案
- 2026-10-31 12:04跟进：夏令时今晚结束，睡前把时钟拨慢一小时，明早多睡一小时本篇
