Cited as evidence that nicotine withdrawal causes a lack of focus, "one study found that there are more workplace accidents during the Great American Smokeout than on any other day of the year." The Great American Smokeout is celebrated on November 17.
Saturday
Most accidents happen between the hours of 7am and 9am and 4pm and 6pm. This is when 76% of the accidents in the USA occur.
Most household accidents occur in bathrooms, as people are in them a few times a day and often slip in the shower or on tiles.
Friday
any time of the day
Friday and Saturday nights
Most of them happen on hot days during busy times of the day.
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They may happen at ANY time of day, but primarily they occur after the hours of darkness.
post office - steady stream of cars all day long
Most fatal car accidents happen on a Saturday.
According to studies by the NHTSA, the most accidents in 2008 occured between 3pm and 9pm. However, the highest percentage of accidents (per cars on the road) occur between Midnight and 3am. For more specific information, check out http://www-fars.nhtsa.dot.gov/Crashes/CrashesAlcohol.aspx