It's a little difficult, but I was trying to squeeze in another work project per day. That didn't work out too well.
My issues: sometimes there would be a lot of lag on the day timer, which i knew was only the timer because i could interact with other things, and then it would start again and sometimes be unresponsive to me trying to pause or slow it down.
Initially, there's no need for a night timer: I think that the fastest timing speed should just increase the hour one per second instead of trying to update the minutes very fast.
Really needs music, even something not made by you but royalty free would do!
Overall decent marks, but you definitely could have made this a browser game. I promise exporting to html5 is just as easy as making the windows executable shipping.