there are 18 hours of light in shara
Death Valley receives an average of about 4,019 hours of sunlight per year, making it one of the sunniest places in the United States.
Light-hours?
The hours of day light ranges from 8 hours (midwinter) to 16 hours (midsummer) in vienna.
12 hours
Edison's best light bulb stayed lit for around 40 hours. This experiment took place in 1879.
12 hours
6 hours
5.5 light hours is about 40 astronomical units (AU)
Las Vegas receives an average of about 3,800 hours of sunlight each year. This translates to roughly 300 sunny days, making it one of the sunniest cities in the United States. The combination of its desert climate and low rainfall contributes to this high number of sunny hours.
12 hours
I think what you are asking is how many hours it takes light to travel 310 light-years. If that is what you meant, then it takes light about 2,717,460 hours to travel 310 light-years. 310 x 365.25 x 24
5