| 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  03 | 20:00 | 19 days |   07  15  18 | +24  00  07 | 09:32 | 17:12 | 00:52 |  1.42 | 20:36 until 23:30 | Gemini
| 1991  05  04 | 20:00 | 20 days |   07  17  45 | +23  55  13 | 09:31 | 17:11 | 00:50 |  1.43 | 20:37 until 23:28 | Gemini
| 1991  05  05 | 20:00 | 21 days |   07  20  13 | +23  50  10 | 09:30 | 17:09 | 00:48 |  1.44 | 20:39 until 23:26 | Gemini
| 1991  05  06 | 20:00 | 22 days |   07  22  40 | +23  44  59 | 09:29 | 17:08 | 00:46 |  1.45 | 20:40 until 23:24 | Gemini
| 1991  05  07 | 20:00 | 23 days |   07  25  08 | +23  39  39 | 09:28 | 17:06 | 00:44 |  1.46 | 20:41 until 23:22 | Gemini
| 1991  05  08 | 20:00 | 24 days |   07  27  35 | +23  34  10 | 09:27 | 17:05 | 00:43 |  1.47 | 20:43 until 23:21 | Gemini
| 1991  05  09 | 20:00 | 24 days |   07  30  03 | +23  28  33 | 09:26 | 17:03 | 00:41 |  1.48 | 20:44 until 23:19 | Gemini
| 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
|
| 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/>