The remaining tips of the visable sun fall behind the hillsides of the Outlands and the buildings of the city. Slowly, a white shape begins to become more and more noticeable in the darkened sky. Small twinkles of starlight are visable in the darkness above. Broken down lighting systems struggle to flicker on, giving those around them what light they can. The shadows around begin to advance on those in the open, coming out from their hiding during the day. Darkness envelops everything, night falling.
Basically, the suggestion is really with the title. Night time events. This kind of event is very versatile. It could simply be a very, passive night time event, the darkness out, limiting peoples' vision, making places near impossible to travel without a light source, etc. It could also be the basis for some very interesting events, whether the OTA decides to creep up on the town in the pass, the CCA enforce a curfew, etc. All in all, I think more night time would be cool.