| Month | First Scan
(MST) | Last Scan
(MST) |
|---|
| January | 7:15 | 17:15 |
| February | 6:45 | 17:45 |
| March | 5:45 | 18:15 |
| April | 5:00 | 18:45 |
| May | 4:45 | 19:15 |
| June | 4:30 | 19:30 |
| July | 4:45 | 19:30 |
| August | 5:00 | 19:15 |
| September | 5:30 | 18:30 |
| October | 6:00 | 17:45 |
| November | 6:30 | 17:00 |
| December | 7:00 | 16:45 |
|