You are still a prisoner of the dark during the daylight. Because of the lack of electricity, indoor lighting is not available. In order to work during the day, you have to sit in front of or near a window.
Luckily in Congo, the temperature are moderate on most days. It averages about the mid- to upper-80's daily. So, you are almost required to open the windows since you do not have air conditioning or circulating ceiling fans.
It is desirable sheer curtains or no curtains at all. Sheers are better to keep bugs and mosquitoes out of living and working space.