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Top 50 interesting facts about Daylight Saving

Following is our collection of incredible Daylight Saving fact check articles and charts explaining insights about Daylight Saving. Sometimes weird, funny, and true Daylight Saving facts.

daylight saving facts
What is Daylight Saving?
  1. Losing an hour of sleep when daylight savings puts the clocks forward causes a 25% increase in heart attacks on the following Monday. They reduce by 21% when clocks go back.

  2. In 2007, a twin brother was born at 1:32 AM, However, then Daylight Savings Time occurred. His twin sister who was then born at 1:06 AM, is considered 26 minutes older.

  3. A suicide bomber was foiled when he forgot to set adjust his clock for daylight savings time and the device went off early in his car

  4. Amtrak trains that are running on time stop in their tracks during fall daylight savings time and wait an hour before resuming. For spring forward, the trains automatically fall behind schedule at 2 a.m. and just have to do their best to make up the time

  5. Hospitals in the US report a 24% spike in heart attack visits due to patients getting one hour less of sleep when switching to daylight saving time

  6. Daylight Savings Time causes a 24% increase in heart attacks every day that the clocks move forward, and a 21% decrease in heart attacks every time the clocks move back.

  7. The first of a set of twins, Samuel, was born at 1:39 a.m. on Sunday, Nov. 6, 2016. His brother Ronan was born 31 minutes later just as daylight saving time had ended, making him 29 minutes older.

  8. A Swedish study found that heart attacks were more common the first three weekdays after the spring transition into Daylight Savings Time

  9. There's a noticeable uptick in heart attacks immediately following Daylight Saving Time... likely due to people suddenly changing their sleep patterns, going against their "internal clock"

  10. Arizona and Hawaii don't observe daylight savings time.

Data charts about Daylight saving

daylight saving fact data chart about Majority of EU citizens in favor of abolishing Daylight Savi
Majority of EU citizens in favor of abolishing Daylight Saving Time

daylight saving fact data chart about Google search trends in "Daylight saving time" worldwide and
Google search trends in "Daylight saving time" worldwide and country-specific (2004-Present)

What are some fun facts about daylight saving?

Arizona doesn't observe Daylight Savings time, except a large reservation in Arizona does, except another smaller reservation inside it doesn't

Because of Daylight Savings Time and the loss of an hour of sleep, the Monday after clocks ‘Spring Forward’ sees an increase in fatal traffic accidents.

Losing an hour of sleep after daylight savings results in a 24% increase of heart attacks whereas gaining an hour of sleep after daylight savings results in a 21% reduction of heart attacks.

Daylight Savings costs the U.S. an estimated $434 million in lost productivity and decreased health.

A man was charged two DUIs at the same time, an hour apart because of daylight savings.

In Connecticut in 1923, you could be fined or imprisoned for observing Daylight Saving Time

Australia has 5 timezones. Unlike other timezones that are almost completely vertical, the country has a few split up into North and South. Only 2 of the timezones are affected by Daylight Savings.

There is a statistically significant increase in fatal car accidents in the days after daylight savings time, presumably due to disruption in sleep patterns.

The state of Arizona does not observe daylight savings time, but the Navajo Nation located within Arizona does observe daylight savings time, but the Hopi Nation located within the Navajo Nation located in Arizona does not observe daylight savings time.

Candy pumpkins were placed on the seat of every U.S. Senator by the candy industry in 1985 in hopes of extending U.S. daylight saving time to cover Halloween.

Swedish researchers found a 5 percent increase in the risk of heart attacks right after Daylight Saving Time began, along with an increase in traffic accidents, workplace injuries and suicide rates. - fact check

The Hopi Reservation does not observe daylight savings time, but it is completely surrounded by the Navajo Reservation which does observe daylight savings time. The Navajo reservation is in Arizona which does not observe daylight savings.

On the 2nd April 2014 a bomb exploded in the bombers face because of daylight saving time

Benjamin Franklin was not behind the idea of daylight savings time. In 1784 he sent a satirical essay to a French newspaper, it has been credited to him ever since.

Daylight Savings Time was first proposed by a man who, as he studied bugs after his shift-work job, wanted more daylight after work.

Despite spanning 5 time zones China only uses 1 timezone (China Standard Time) and stopped using daylight savings in 1991.

Arizona and Hawaii are the only states in the US that don't observe Daylight Savings Time

In May 1965, Minnesota’s “Twin Cities” were on different times for two weeks when St. Paul and Minneapolis disagreed on when to start Daylight Saving Time.

Since it is so close to the equator and is the only oceanic state in the US, Hawaii does not observe daylight savings time.

There is only one time zone for all of India. India does not observe any form of daylight saving time or any other seasonal adjustments to the time.

George Hudson was the first to propose modern-day daylight saving time, because he wanted more time to go collect bugs... - fact check

A bomb meant for an Air India flight instead exploded at Tokyo's Narita Airport because the bombers neglected to take daylight savings time into account

Mongolia introduced daylight saving time in 2015 and abolished it in 2017 - fact check

Quintana Roo is the only Mexican state in the Southeastern Standard Time Zone. Since it does not observe daylight saving time, it is in the same time zone as the Eastern Standard Time for half of the year and the Central Standard Time for the other half of the year.

Heart attacks increase by 25 percent the Monday after daylight savings time. - fact check

Daylight saving infographics

daylight saving fact infographic about Week over week energy consumption difference the week before
Week over week energy consumption difference the week before and following daylight saving

daylight saving fact infographic about Depression in the US vs Daylight Savings Time
Depression in the US vs Daylight Savings Time