Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and METOP-B Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 8/10/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (METOP-B) | Time (METOP-B) | Lat,Lon (METOP-B) | SZA (METOP-B ) | Distance(km) | Time Diff (sec) |
| 1 | 08/14/2025 | 16:31:10 | -75.12, 98.40 | 118.55 | 08/14/2025 | 16:32:15 | -75.08, 101.86 | 118.82 | 98.98 | 65 |
| 2 | 08/14/2025 | 17:21:51 | 74.92, -93.72 | 61.24 | 08/14/2025 | 17:22:59 | 74.89, -91.33 | 61.04 | 69.23 | 68 |
| 3 | 08/14/2025 | 18:12:33 | -74.79, 73.96 | 118.91 | 08/14/2025 | 18:13:43 | -74.77, 75.68 | 119.05 | 50.12 | 70 |
| 4 | 08/14/2025 | 19:03:15 | 74.63,-118.31 | 60.93 | 08/14/2025 | 19:04:27 | 74.58,-117.50 | 60.81 | 24.64 | 72 |
| 5 | 08/14/2025 | 19:53:57 | -74.50, 49.36 | 119.21 | 08/14/2025 | 19:55:11 | -74.46, 49.53 | 119.28 | 6.55 | 74 |
| 6 | 08/14/2025 | 20:44:41 | 74.44,-143.18 | 60.73 | 08/14/2025 | 20:45:51 | 74.47,-143.14 | 60.73 | 2.87 | 70 |
| 7 | 08/14/2025 | 21:35:26 | -74.46, 24.10 | 119.24 | 08/14/2025 | 21:36:33 | -74.45, 24.14 | 119.27 | 1.80 | 67 |
| 8 | 08/14/2025 | 22:26:11 | 74.45,-168.57 | 60.76 | 08/14/2025 | 22:27:13 | 74.45,-168.52 | 60.74 | 1.54 | 62 |
| 9 | 08/14/2025 | 23:16:55 | -74.42, -1.16 | 119.27 | 08/14/2025 | 23:17:55 | -74.43, -1.24 | 119.26 | 2.96 | 60 |
| 10 | 08/15/2025 | 00:07:41 | 74.45, 166.04 | 60.79 | 08/15/2025 | 00:08:35 | 74.44, 166.10 | 60.75 | 2.74 | 54 |
| 11 | 08/15/2025 | 00:58:24 | -74.42, -26.55 | 119.24 | 08/15/2025 | 00:59:16 | -74.42, -26.62 | 119.26 | 1.97 | 52 |
| 12 | 08/15/2025 | 01:49:09 | 74.41, 140.78 | 60.76 | 08/15/2025 | 01:49:56 | 74.42, 140.72 | 60.76 | 2.13 | 47 |
| 13 | 08/15/2025 | 02:39:54 | -74.43, -51.94 | 119.22 | 08/15/2025 | 02:40:38 | -74.40, -52.00 | 119.25 | 3.13 | 44 |
| 14 | 08/15/2025 | 03:30:39 | 74.42, 115.40 | 60.79 | 08/15/2025 | 03:31:18 | 74.40, 115.34 | 60.77 | 2.23 | 39 |
| 15 | 08/15/2025 | 04:21:24 | -74.43, -77.33 | 119.19 | 08/15/2025 | 04:21:59 | -74.44, -77.26 | 119.20 | 2.23 | 35 |
| 16 | 08/15/2025 | 05:12:09 | 74.42, 90.01 | 60.82 | 08/15/2025 | 05:12:39 | 74.44, 90.08 | 60.82 | 2.80 | 30 |
| 17 | 08/15/2025 | 06:02:54 | -74.44,-102.72 | 119.16 | 08/15/2025 | 06:03:21 | -74.42,-102.64 | 119.19 | 2.93 | 27 |
| 18 | 08/15/2025 | 06:53:39 | 74.43, 64.62 | 60.84 | 08/15/2025 | 06:54:01 | 74.42, 64.70 | 60.83 | 2.46 | 22 |
| 19 | 08/15/2025 | 07:44:23 | -74.39,-127.98 | 119.19 | 08/15/2025 | 07:44:43 | -74.40,-128.02 | 119.18 | 1.82 | 20 |
| 20 | 08/15/2025 | 08:35:08 | 74.38, 39.36 | 60.82 | 08/15/2025 | 08:35:23 | 74.41, 39.32 | 60.84 | 2.76 | 15 |
| 21 | 08/15/2025 | 09:25:53 | -74.40,-153.36 | 119.16 | 08/15/2025 | 09:26:05 | -74.39,-153.40 | 119.17 | 1.44 | 12 |
| 22 | 08/15/2025 | 10:16:38 | 74.39, 13.97 | 60.84 | 08/15/2025 | 10:16:45 | 74.39, 13.94 | 60.85 | 1.06 | 7 |
| 23 | 08/15/2025 | 11:07:23 | -74.40,-178.75 | 119.13 | 08/15/2025 | 11:07:27 | -74.37,-178.78 | 119.16 | 3.41 | 4 |
| 24 | 08/15/2025 | 11:58:08 | 74.39, -11.42 | 60.87 | 08/15/2025 | 11:58:07 | 74.37, -11.45 | 60.85 | 2.39 | 1 |
| 25 | 08/15/2025 | 12:48:53 | -74.41, 155.86 | 119.11 | 08/15/2025 | 12:48:48 | -74.41, 155.96 | 119.11 | 3.06 | 5 |
| 26 | 08/15/2025 | 13:39:38 | 74.40, -36.80 | 60.90 | 08/15/2025 | 13:39:28 | 74.41, -36.70 | 60.90 | 3.19 | 10 |
| 27 | 08/15/2025 | 14:30:22 | -74.36, 130.60 | 119.13 | 08/15/2025 | 14:30:10 | -74.39, 130.58 | 119.10 | 2.97 | 12 |
| 28 | 08/15/2025 | 15:21:08 | 74.40, -62.19 | 60.93 | 08/15/2025 | 15:20:50 | 74.39, -62.08 | 60.91 | 3.56 | 18 |
| 29 | 08/15/2025 | 16:11:52 | -74.37, 105.21 | 119.11 | 08/15/2025 | 16:11:32 | -74.37, 105.20 | 119.09 | 0.69 | 20 |
| 30 | 08/15/2025 | 17:02:37 | 74.36, -87.45 | 60.90 | 08/15/2025 | 17:02:12 | 74.37, -87.47 | 60.92 | 1.67 | 25 |
| 31 | 08/15/2025 | 17:53:22 | -74.37, 79.82 | 119.08 | 08/15/2025 | 17:52:54 | -74.36, 79.82 | 119.08 | 1.72 | 28 |
| 32 | 08/15/2025 | 18:44:07 | 74.37,-112.84 | 60.93 | 08/15/2025 | 18:43:34 | 74.36,-112.85 | 60.93 | 0.74 | 33 |
| 33 | 08/15/2025 | 19:34:51 | -74.33, 54.56 | 119.11 | 08/15/2025 | 19:34:16 | -74.34, 54.44 | 119.08 | 3.97 | 35 |
| 34 | 08/15/2025 | 20:25:37 | 74.37,-138.23 | 60.96 | 08/15/2025 | 20:24:56 | 74.34,-138.23 | 60.94 | 3.08 | 41 |
| 35 | 08/15/2025 | 21:16:21 | -74.34, 29.17 | 119.08 | 08/15/2025 | 21:15:38 | -74.33, 29.06 | 119.07 | 3.65 | 43 |
| 36 | 08/15/2025 | 22:07:06 | 74.33,-163.49 | 60.93 | 08/15/2025 | 22:06:18 | 74.33,-163.61 | 60.95 | 3.58 | 48 |
| 37 | 08/15/2025 | 22:57:51 | -74.34, 3.79 | 119.05 | 08/15/2025 | 22:56:59 | -74.36, 3.80 | 119.02 | 2.22 | 52 |
| 38 | 08/15/2025 | 23:48:36 | 74.33, 171.12 | 60.96 | 08/15/2025 | 23:47:39 | 74.36, 171.13 | 61.00 | 3.15 | 57 |
| 39 | 08/16/2025 | 00:39:21 | -74.35, -21.60 | 119.02 | 08/16/2025 | 00:38:21 | -74.34, -21.58 | 119.01 | 0.61 | 60 |
| 40 | 08/16/2025 | 01:30:06 | 74.34, 145.73 | 60.98 | 08/16/2025 | 01:29:01 | 74.34, 145.75 | 61.01 | 0.94 | 65 |
| 41 | 08/16/2025 | 02:20:51 | -74.35, -46.99 | 118.99 | 08/16/2025 | 02:19:43 | -74.33, -46.96 | 119.00 | 2.59 | 68 |
| 42 | 08/16/2025 | 03:11:36 | 74.34, 120.35 | 61.01 | 08/16/2025 | 03:10:23 | 74.33, 120.37 | 61.02 | 1.75 | 73 |
| 43 | 08/16/2025 | 04:02:20 | -74.31, -72.25 | 119.02 | 08/16/2025 | 04:01:05 | -74.31, -72.34 | 118.99 | 2.85 | 75 |
| 44 | 08/16/2025 | 04:53:01 | 74.10, 95.58 | 60.76 | 08/16/2025 | 04:51:49 | 74.11, 94.50 | 60.87 | 32.97 | 72 |
| 45 | 08/16/2025 | 05:43:44 | -74.02, -96.90 | 119.33 | 08/16/2025 | 05:42:33 | -74.00, -98.45 | 119.22 | 47.54 | 71 |
| 46 | 08/16/2025 | 06:34:24 | 73.76, 71.04 | 60.40 | 08/16/2025 | 06:33:17 | 73.80, 68.41 | 60.64 | 81.77 | 67 |
| 47 | 08/16/2025 | 07:25:07 | -73.68,-121.46 | 119.69 | 08/16/2025 | 07:24:01 | -73.69,-124.53 | 119.44 | 96.02 | 66 |
Figure of NOAA-21 and METOP-B satellite orbits during SNOs since TLE Epoch: 8/10/2025
Download SNOs between NOAA-21 and METOP-B since TLE EPOCH: 08/10/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and METOP-B