Time in Quests

[ExplorerBob]

Is it possible to have a quest rely on a set time instead of a time relative to the player's arrival?

For instance, if the game takes place in the '80s, before the Epsilon Station disaster, would it be possible to have, in '88, the disaster occur, the planet turn dead and the station information change (because the humans there are deceased)?

[sgqwonkian]

Off the top of my head, no. But I could be forgetting something.