I pretty much write when I get the chance. If I have an assignment then I take care of that first or I at least start it first. Then I move on to other writing that I do so I can have a break from the assignment.
I usually write in the early morning or evening but sometimes things around here are quiet and I get a chance to work for a few hours during the day.
Ahhh, I'm surprised the housework gets done for all the time I spend writing on various projects. (Luckily, my husband does most of the cooking!)