The minimum hours of sleep for common person is 5 hours is enough and it is more

U.S.A. is a very vast country. So, there will be big difference of sun rise and sun set timing all over the country. There are different time zones in U.S.A. whereas in India there is only one time i.e. Indian standard Time.

In our country also sun sets early in North East. Hence office staff leave office early though they attend office even before time in the morning as sun rises earlier.

I used to sleep 10 hours a day, recently i felt its not good and i started waking early morning and having 5 hours sleep

Eight hour sleep is very necessary for our Health.If you sleep late at night then You become lazy on the next day.To work properly need a proper hours for sleep. :woohoo: :woohoo: :woohoo: :woohoo: :woohoo:

U.S.A. is a very vast country. So, there will be big difference of sun rise and sun set timing all over the country. There are different time zones in U.S.A. whereas in India there is only one time i.e. Indian standard Time.

In our country also sun sets early in North East. Hence office staff leave office early though they attend office even before time in the morning as sun rises earlier.

Rightly said.
The time would be different between northern america and southern america.
Sometimes the difference is of 1 hr while sometime its 3 hrs , it all depends on which zone u reside (east, west, north or south)

It is not always that sunsets at 9pm. Sunsets in USA usually by 6 to 7 pm if its summer . If its winter then it setby 3pm only. So it all depends on the climate and zone u reside.

I used to sleep 10 hours a day, recently i felt its not good and i started waking early morning and having 5 hours sleep