I've never ever timed myself when I do work on my sites because basically when I feel like it, I'll work on my sites. There isn't a time frame basically because I chat more than I do work, and if I chatted more; I'd be more productive. So, do you time yourself on the hours spent that you work on your sites?
I do not work on my sites these days but when I used to work on them it would be for an hour max. Moreover, I'm not a big time webmaster and consider it a hobby. ARonald