So I needed to take some time and come back to this because I was genuinely lost. I saw the watch in my inventory but there wasn't any indication of what i needed to do with it. Pressing the right arrow key while over the watch was what made the dialog pop up letting me change the time. After dropping the fruit in the water and passing time, I just couldn't figure out what changed or what else I needed to do.
There is a neat idea here. Maybe having puzzles where you need to pass a certain amount of time but not go too far to prevent this other bad thing from happening could be pretty neat. It just feels way too abstract and I just have no clue how to proceed. What this game needs is a better indication of what your actions are accomplishing so you can figure out how to use the tools you have to progress. I have no idea what the fruit disappearing in the water accomplishes or how I can use that to proceed.
You can definitely make some really neat puzzles using this concept. Having the world change based on what time it is is a neat concept. There's something to the idea of being able to impact things that happen in the past in order to change the outcome of the future, I would just love to see that idea come to life a little more.