Hours go by in a heartbeat.
This was last night. It was more than a little bit baffling where the time went, and how all of a sudden it was 2:30am when it felt like we had just begun. From bright twilight leaving town, to all the way back somewhere after 3am, the aurora danced. We had the most perfect space weather and the most perfect weather.
On the way home, I asked a couple guests if they were beginning to feel tired. One said a little, and the other said 'lasting impressions'. That's about perfect.