Depends on your experience. Frankly, I don't care about the time involved.
I don't like to rush my shaves so I shave in the evening. Hot towel and the whole nine yards. It might take a total of thirty minutes for a three pass shave from start to finish. A three pass DE shave will take less than half that time, but I am unwilling to compromise. Shave time is my time and I'm damn well going to enjoy myself as contrasted to just lopping off whiskers.
Dedicated to the pursuit of Life, Liberty, and Trout.