No way! Sometimes, it is up to you.
Addition: it really depends on the person, if this is the way someone likes to use free time, then yes, is could be considered normal.
8 hrs
It varies person to person and day to day, but when supervisors start working there is no time limit, some days 4 hours, some days 1 hour and some days more but average it may be 2 hours daily.
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A normal day on Uranus, is 17 hours 14 minutes and 24 seconds long.
The normal day at work is different for each person. For many people the day starts off with getting up and having breakfast. Then they go to work for 7 or 8 hours and then go home, eat dinner, and then go to bed.
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for 3 hours a day..
Shaw's has normal store hours on Labor Day.
A period lasting 30 hours can be normal as a period can be as short as one day.
exercise?
1 day = 24 hours = 1440 minutes = 86,400 seconds