Not very bright at all. The process of becoming blinded by light is because the iris contracts when the light level increases. The reverse process of dilation is slow for humans, so the return to darkness leaves your eye with insufficient light coming in to see in the environment you suggest. This isn't a binary factor.
The VA calculates the rate of pursuit by dividing the number of credit hours being pursued by the number of credits considered to be full-time for the term. As as example, if the term is 10 to 13 weeks in length, 12 credits is considered full time. If the term is 8 weeks in length, 8 credits is considered full time.
In order to appropriately schedule your time, you need to know how many college credits are equivalent to one semester hour. Depending on the school chosen, figuring out how credit hours work can be a simple or more difficult process. This will differ between full and part time students. Full-time students take at least 12 credit hours per semester. Part-time students take 11 hours or less per semester.