My players were on an island that had time zones- large geographic regions that were permanently twilight, early morning, afternoon, etc. They had found the remnants of what might have once been a village and decided to camp there for the "night" (even though it was mid afternoon).
The group woke up, and two members of their group were missing. As they started to look around, The Captain noticed that some of his clothes were lightly wet. It wasn't really "wet", but somewhat more tacky, like antibacterial hand gel. Further investigation showed that there were spots of the tacky like liquid along the tops of the stonework ruins, but not anywhere on the ground.