| DATE | start | midnight | stop |
|---|---|---|---|
| Jan 1 | 2 55 | 6 40 | 10 40 |
| Jan 20 | 4 10 | 7 55 | 12 05 |
| Feb 1 | 4 50 | 8 40 | 13 05 |
| Feb 20 | 5 50 | 9 55 | 14 35 |
| Mar 1 | 6 15 | 10 30 | 15 20 |
| Mar 20 | 7 10 | 11 50 | 16 50 |
| Apr 1 | 7 35 | 12 30 | 17 40 |
| Apr 20 | 8 35 | 13 50 | 19 10 |
| May 1 | 9 00 | 14 30 | 20 00 |
| May 20 | 10 00 | 15 50 | 21 35 |
| Jun 1 | 10 50 | 16 35 | 22 25 |
| Jun 20 | 12 05 | 17 50 | 23 50 |
| Jul 1 | 12 50 | 18 35 | 00 35 |
| Aug 1 | 15 05 | 20 35 | 2 25 |
| Sep 1 | 17 25 | 22 35 | 3 50 |
| Oct 1 | 19 45 | 00 35 | 5 15 |
| Nov 1 | 22 05 | 2 35 | 6 40 |
| Dec 1 | 00 35 | 4 35 | 8 20 |