Use the formula: energy = power x time. If power is in watts, convert it to kilowatts. Then you have: power (in kilowatts) x time (in hours) = energy (in kWh). Of course, you'll first need to figure out how much power the device - whatever you are talking about - uses.
Six panels would produce six times the power, 1.2 kilowatts. Note that this happens only in direct sunlight, and in other conditions the power produced is much less. In ideal conditions the panels would produce 1.2-kilowatt-hours every hour, so in an 8-hour day it would be 9.6 kilowatt-hours, but not when it's cloudy.
SIX hours !
London is 6 hours ahead of Texas.
There are: 6*7*24 = 1008 hours
six and one third hours, or six hours and twenty minutes
Six and a quarter hours.
About six hours by airplane.
From Philadelphia, Pennsylvania to Atlanta, Georgia is 658 miles.
8 hours
6 hours
Six.
Six hours in total !