HORAL
| Date | Clue |
|---|---|
| 2006-05-03 | Time-related |
| 1999-05-27 | Timed like some air shuttles |
| 1999-04-02 | Occurring every 60 minutes |
| 1998-05-10 | Every 60 minutes |
| 1995-02-19 | Like clock chimes |
| Date | Clue |
|---|---|
| 2006-05-03 | Time-related |
| 1999-05-27 | Timed like some air shuttles |
| 1999-04-02 | Occurring every 60 minutes |
| 1998-05-10 | Every 60 minutes |
| 1995-02-19 | Like clock chimes |