Techniques found to show time passing on film
- Dissolve between frames, instead of sharp cuts
- Doing a shot away from the action
- Cross-fade from the middle of an action or speech
- Characters shifting position – or new interruptions
- Pan off subject
- Blurring in and out
- Classic clock speeding up
- Day to night time lapse shot
- Reaction shots and speech
Ideas from http://www.indietalk.com/showthread.php?t=19580
