Why they worry about running out of time?
I mean they have time machine for crying out loud. So, the deadline for the history assignment shouldn't be problem.
shareRemember the whole wind your watch thing? Rufus tells them that time in San Dimas, the present they leave, keeps moving forward when they're in the past.
you can make up any time travel "rules" you need to for your stories sake cause time travel itself is made up.
So I guess one of the rules in this is you can't go back to a time period when you were traveling in time. For example, if you left San Dimas at midnight and spent 5 hours in the past or future and then came back at 5am... you cant use the time machine to travel to any time between 12 & 5.
Like I said that my guess, but Looper handles time travel the best when willis tells his younger self not to think about time travel, it'll just mess with your head and never make sense... ie just go with it. it is what is.
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"you can make up any time travel "rules" you need to for your stories sake cause time travel itself is made up."
No.
Time travel is not made up.
We travel in time all the time, usually it's 'forward' and at a certain 'pace'. But who says this needs to always happen to everyone for all eternity this exact way?
Just because for your short years on some crappy planet you have not experienced it differently (though I am sure your internal time has had adjustments; fun times go by fast, boring times go by slowly - although it's supposedly the same external time), doesn't mean this narrow and incredibly tiny sliver of experience of the existence in Universe is somehow Universally dictated to all planes and dimensions of existence.
BTW, you forgot to use a capital "Y" there.
Also, the reason you 'can make up any 'rules'' is not your fantasy about time travel being somehow 'made up' - the real reason is that no one is stopping you from forming any thoughts, words, sentences or sentiments you want.
That's the true reason. You are free to think whatever you want and to write whatever you want. "Time travel being made up" doesn't enter into it.
Besides, just because something is 'real' (whatever that means), doesn't mean you CAN'T create any rules for your stories you want about those. I could make a rule that cars levitate, even though they don't do that in 'real life'.
So regardless of whether 'time travel is made up' (it's not), you are still free to write, think or create any 'rules' about it for any story you want. 'Reality' or 'non-reality' of something has never stopped anyone from writing anything they want about them in story or other form.
You can write a rule into a story that Abraham Lincoln was a blonde teenage witch, if you want. Reality isn't going to stop you.
Your train of thought should be driven to a garage to be overhauled and thoroughly repaired, before you allow anyone else to board it.