Do these games allow or support arriving at a certain time and place for a triggered event? Say like to witness a ghost that only appears at 1AM under a specific tree (for sake of example).
Oblivion did, the Forlorn Watchman quest.
The Paranioa quest was another.
Edit: In the paranioa quest it was triggered by meeting the Bosmer first.
However I believe you can meet the watchman before triggering the quest topic in dialogue in Bravil.
They've made mention of the Radiant AI making it possible to tail and follow any NPC, break into their house and possibly finding out infomation leading to quests or events.
So I'd say if this is a feature of Skyrim in its scripts as well, time based vents may be quite common.
However this is all speculation on my part.