REDEYES
| Date | Clue |
|---|---|
| 2020-01-17 | Trips in the dark |
| 2018-01-19 | All-nighters? |
| 2017-10-17 | Overnight flights |
| 2015-09-18 | They leave at night |
| 2012-09-02 | Two-day trips, sometimes |
| 2011-03-10 | They might depart at midnight |
| 2006-03-10 | Result of lack of sleep, maybe |
| 2006-01-16 | Overnight flights |
| 2003-11-01 | Fly-by-nights? |
| 1998-06-06 | Signs of insomnia, maybe |