here is my experience with loss of time.. i don't have DID (that I know of) - my other parts don't take control (that i know of).

i occasionally lose track of time, but not a whole lot.. as for actual loss of time - it's not generally large chunks of time and i'm not usually even aware that i've lost time until later when someone might refer to something happened during that chunk of time that i have no recollection of. and when that happens, i not only have no recollection of what they are talking about, but also realize that i have no recollection of the before during and after surrounding whatever it is that is mentioned (usually they will refer to a conversation and sometimes mention what we were doing when we had the conversation and i can't remember any of it.)

so i don't really know how long it lasts, but i imagine that it's not all that long - especially since i'm generally oblivious to it. the most i might experience as far as awareness goes is if i try to think back to like 'what did i do tuesday afternoon..' and may have absolutely no idea and can't remember. i've been trying to take time each day, toward the end of the day and walk through my days mentally lately to see how much i can remember. most days i do pretty well.