Is October the longest month because of an extra hour?
Question asked:
“October is the longest month because it has 31 days plus an extra hour when the clocks go back, making it an hour longer than other months with 31 days.”
Summary
October does not have more total time than other 31‑day months. While many regions set clocks back one hour in late October, that extra hour is offset by the loss of an hour when clocks go forward in late March, leaving October’s overall length equal to other months with 31 days. Therefore, October is not the longest month.
Sources 54 searched
- Why do the clocks change twice a year? | Government.nl
In 1977, the Netherlands introduced summer time to align with neighbouring countries. Summer time and winter time are agreed on by the EU. In almost all European countries the clock goes forward an hour in March and back an hour in October.
- Daylight Saving Time Rules | NIST
At present, daylight saving time ... (at 2 a.m. the local time becomes 1 a.m. and that hour is repeated, so there is an extra hour in that day)...
- Daylight Saving Time (DST) | Congress.gov | Library of Congress
Daylight saving time (DST) is a period of the year between spring and fall when clocks in most parts of the United States are set one hour ahead of standard time. DST begins on the second Sunday in March and ends on the first Sunday in November. The beginning and ending dates are set in statute.
- The end of summer: why do the clocks go back in October? | Society | The Guardian
Many myths suggest a reason for Daylight Saving Time, which adds an hour in October and takes one away in March
- We lose an hour of daylight (or more) in October: How short your days will get
Through October, many of us will lose at least an hour of daylight in our days.
- Daylight saving time 2026 ended Sunday. Here's what time the clocks changed and more key details. - CBS News
Daylight saving time is the period during the year, from March to early November, when the majority of the U.S. operates one hour ahead of standard time.
- Why do the clocks go back? | Research | Queen's University Belfast
“The clocks go back one hour at 2.00am on the last Sunday in October and forward one hour at 1.00am on the last Sunday in March (unless that’s Easter Sunday).
- Daylight saving time in the United States - Wikipedia
Beginning in 1967, the act mandated ... back one hour at 2:00 a.m. on the last Sunday in October. States were allowed to exempt themselves from DST as long as the entire state did so. If a state chose to observe DST, the time changes were required to begin and end on the established dates. The act also required states that used daylight saving time ...
- Daylight saving time - Wikipedia
The Uniform Time Act of 1966 formalized ... of daylight saving time observation as lasting six months (it was previously declared locally); this period was extended to seven months in 1986, and then to eight months in 2005. The 2005 extension was motivated in part by lobbyists from the candy industry, seeking to increase profits by including Halloween (31 October) within the ...
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