| Ephemeris for Mars
|
|     DATE     | Time  | Age of  | RIGHT ASCENS | DECLINATION | Rise  | Culm  | Set   | Approx|    Observable     | Constellation
| Year Mth Day |       | Moon    | hour min sec | deg min sec |       |       |       | Mag.  |                   |
|
| 1991  05  10 | 20:00 | 26 days |   07  32  31 | +23  22  47 | 09:25 | 17:02 | 00:39 |  1.48 | 20:46 until 23:17 | Gemini
| 1991  05  11 | 20:00 | 27 days |   07  34  58 | +23  16  52 | 09:24 | 17:00 | 00:37 |  1.49 | 20:47 until 23:15 | Gemini
| 1991  05  12 | 20:00 | 28 days |   07  37  26 | +23  10  50 | 09:23 | 16:59 | 00:35 |  1.50 | 20:48 until 23:13 | Gemini
| 1991  05  13 | 20:00 | 29 days |   07  39  53 | +23  04  38 | 09:22 | 16:57 | 00:33 |  1.51 | 20:50 until 23:11 | Gemini
| 1991  05  14 | 20:00 | 00 days |   07  42  21 | +22  58  18 | 09:21 | 16:56 | 00:31 |  1.51 | 20:51 until 23:09 | Gemini
| 1991  05  15 | 20:00 | 02 days |   07  44  49 | +22  51  50 | 09:20 | 16:54 | 00:29 |  1.52 | 20:52 until 23:07 | Gemini
| 1991  05  16 | 20:00 | 03 days |   07  47  16 | +22  45  13 | 09:19 | 16:53 | 00:27 |  1.53 | 20:54 until 23:05 | Gemini
| 1991  05  17 | 20:00 | 04 days |   07  49  44 | +22  38  28 | 09:18 | 16:51 | 00:25 |  1.54 | 20:55 until 23:03 | Gemini
| 1991  05  18 | 20:00 | 05 days |   07  52  11 | +22  31  35 | 09:17 | 16:50 | 00:23 |  1.54 | 20:56 until 23:01 | Gemini
| 1991  05  19 | 20:00 | 06 days |   07  54  38 | +22  24  33 | 09:16 | 16:48 | 00:21 |  1.55 | 20:58 until 22:59 | Gemini
| 1991  05  20 | 20:00 | 07 days |   07  57  06 | +22  17  23 | 09:15 | 16:47 | 00:19 |  1.56 | 20:59 until 22:57 | Gemini
| 1991  05  21 | 20:00 | 08 days |   07  59  33 | +22  10  05 | 09:14 | 16:45 | 00:17 |  1.56 | 21:00 until 22:55 | Gemini
| 1991  05  22 | 20:00 | 09 days |   08  02  00 | +22  02  38 | 09:13 | 16:44 | 00:15 |  1.57 | 21:01 until 22:53 | Cancer
| 1991  05  23 | 20:00 | 10 days |   08  04  27 | +21  55  03 | 09:12 | 16:43 | 00:13 |  1.58 | 21:03 until 22:51 | Cancer
| 1991  05  24 | 20:00 | 11 days |   08  06  54 | +21  47  20 | 09:11 | 16:41 | 00:11 |  1.58 | 21:04 until 22:49 | Cancer
| 1991  05  25 | 20:00 | 12 days |   08  09  21 | +21  39  29 | 09:10 | 16:40 | 00:09 |  1.59 | 21:05 until 22:47 | Cancer
| 1991  05  26 | 20:00 | 13 days |   08  11  48 | +21  31  30 | 09:10 | 16:38 | 00:06 |  1.60 | 21:06 until 22:45 | Cancer
| 1991  05  27 | 20:00 | 14 days |   08  14  15 | +21  23  23 | 09:09 | 16:37 | 00:04 |  1.60 | 21:07 until 22:43 | Cancer
| 1991  05  28 | 20:00 | 15 days |   08  16  42 | +21  15  08 | 09:08 | 16:35 | 00:02 |  1.61 | 21:08 until 22:41 | Cancer
| 1991  05  29 | 20:00 | 16 days |   08  19  08 | +21  06  45 | 09:07 | 16:34 | 00:00 |  1.61 | 21:10 until 22:39 | Cancer
| 1991  05  30 | 20:00 | 17 days |   08  21  35 | +20  58  14 | 09:06 | 16:32 | 23:58 |  1.62 | 21:11 until 22:37 | Cancer
| 1991  05  31 | 20:00 | 17 days |   08  24  01 | +20  49  36 | 09:05 | 16:31 | 23:56 |  1.63 | 21:12 until 22:35 | Cancer
| 1991  06  01 | 20:00 | 18 days |   08  26  27 | +20  40  49 | 09:04 | 16:29 | 23:54 |  1.63 | 21:13 until 22:32 | Cancer
| 1991  06  02 | 20:00 | 19 days |   08  28  54 | +20  31  55 | 09:04 | 16:28 | 23:52 |  1.64 | 21:14 until 22:30 | Cancer
| 1991  06  03 | 20:00 | 20 days |   08  31  20 | +20  22  53 | 09:03 | 16:26 | 23:49 |  1.64 | 21:15 until 22:28 | Cancer
|
| All times computed for Cambridge (latitude 42.38; longitude -71.11)
|      and expressed in Cambridge time.
|
| Ephemeris computed by Dominic Ford.
| <https://in-the-sky.org/>