In the book The Restaurant at the End of the Universe, Douglas Adams attempts to lay out the basics of which tense to use when describing time travel:
In it guests take (willan on-take) their places at the table and eat (willan on-eat) sumptuous meals whilst watching (willing watchen) the whole of creation explode around them. (source)
I don't really understand his rules, and I doubt that Adams did too, but how do you correctly describe time travel?
For example, what is the correct grammar for this:
Winston, from the year 1984, went to the year 3001 and bought a hoverboard.
Where Winston, in 1984 travelled forward in time to the year 3001, bought the hoverboard and then travelled back in time to 1984.