Nice puzzles, despite the time it took for me to figure out the clock.
I liked the aspect of traveling back in time to solve some of them, but I think it would have been cool to interact with the environment in the past to affect the puzzles in the future, instead of just giving hints to the solution. Very minor gripe, in the grand scheme of things though.
Bug wise, I think the camera got a little janky sometime when the inventory would open, and would snap around or to the center of the screen, but it only happened a couple times and I'm not too sure how I managed to get it to happen, to be honest.
But its clear you have a passion for puzzle games, and it really comes through on this one, great work!