I never keep track of my time. For me sewing/quilting are often an hour here and an hour there in between laundry and cooking. I still work full time so I also do a lot of an hour after work before my husband gets home and we eat or go to the gym.
There used to me a woman at a quilt guild I went to that knew exactly (hours and minutes) how long it took her to make every quilt and announced it during show and tell. I found it a bit annoying after a while. lol