There’s plenty of SF where locals use their own calendar / length of days but also use a universal based one so that every colony/ship etc have a common value (usually Earth based but also atomic clock). As demonstrated by the measurement mismatches that were the reason for Mars Climate orbiter crash, speaking the same scientific language is necessary.
What do you mean you don’t need to re-read good books? That’s what they are for! Bad books you get rid off, good ones you read till they fall apart and then you buy it new again
I was told by a local in the French Alps to never buy a house that isn’t on the old village’s grounds. Those villages had hundreds of years of experience with spring melt, autumn rains/mud avalanches and winter avalanches. They built where it was safe. You ignore that rule at your own peril.
Agree with you. That’s one movie that stays with you all your life.