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: 8/11/2025
| 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, 98.39 | 118.54 | 08/14/2025 | 16:32:15 | -75.07, 101.84 | 118.83 | 99.03 | 65 |
| 2 | 08/14/2025 | 17:21:51 | 74.92, -93.73 | 61.24 | 08/14/2025 | 17:22:59 | 74.88, -91.35 | 61.03 | 69.24 | 68 |
| 3 | 08/14/2025 | 18:12:33 | -74.79, 73.95 | 118.90 | 08/14/2025 | 18:13:43 | -74.77, 75.66 | 119.06 | 50.16 | 70 |
| 4 | 08/14/2025 | 19:03:15 | 74.64,-118.32 | 60.94 | 08/14/2025 | 19:04:27 | 74.58,-117.51 | 60.80 | 24.87 | 72 |
| 5 | 08/14/2025 | 19:53:57 | -74.51, 49.34 | 119.21 | 08/14/2025 | 19:55:11 | -74.46, 49.51 | 119.29 | 7.34 | 74 |
| 6 | 08/14/2025 | 20:44:41 | 74.45,-143.19 | 60.74 | 08/14/2025 | 20:45:51 | 74.46,-143.15 | 60.73 | 1.99 | 70 |
| 7 | 08/14/2025 | 21:35:26 | -74.46, 24.08 | 119.24 | 08/14/2025 | 21:36:33 | -74.44, 24.13 | 119.28 | 2.66 | 67 |
| 8 | 08/14/2025 | 22:26:11 | 74.45,-168.58 | 60.77 | 08/14/2025 | 22:27:13 | 74.45,-168.53 | 60.74 | 1.71 | 62 |
| 9 | 08/14/2025 | 23:16:55 | -74.42, -1.18 | 119.26 | 08/14/2025 | 23:17:55 | -74.43, -1.25 | 119.27 | 2.32 | 60 |
| 10 | 08/15/2025 | 00:07:40 | 74.41, 166.16 | 60.74 | 08/15/2025 | 00:08:35 | 74.43, 166.09 | 60.75 | 3.10 | 55 |
| 11 | 08/15/2025 | 00:58:25 | -74.43, -26.57 | 119.24 | 08/15/2025 | 00:59:17 | -74.41, -26.63 | 119.26 | 2.44 | 52 |
| 12 | 08/15/2025 | 01:49:10 | 74.42, 140.77 | 60.77 | 08/15/2025 | 01:49:57 | 74.41, 140.71 | 60.76 | 1.96 | 47 |
| 13 | 08/15/2025 | 02:39:55 | -74.43, -51.95 | 119.21 | 08/15/2025 | 02:40:38 | -74.45, -51.89 | 119.21 | 2.59 | 43 |
| 14 | 08/15/2025 | 03:30:40 | 74.42, 115.38 | 60.79 | 08/15/2025 | 03:31:19 | 74.40, 115.32 | 60.77 | 3.01 | 39 |
| 15 | 08/15/2025 | 04:21:25 | -74.44, -77.34 | 119.18 | 08/15/2025 | 04:22:00 | -74.43, -77.27 | 119.20 | 2.23 | 35 |
| 16 | 08/15/2025 | 05:12:10 | 74.43, 90.00 | 60.82 | 08/15/2025 | 05:12:40 | 74.43, 90.07 | 60.82 | 2.27 | 30 |
| 17 | 08/15/2025 | 06:02:53 | -74.39,-102.60 | 119.21 | 08/15/2025 | 06:03:21 | -74.41,-102.65 | 119.19 | 2.87 | 28 |
| 18 | 08/15/2025 | 06:53:39 | 74.43, 64.61 | 60.85 | 08/15/2025 | 06:54:01 | 74.42, 64.69 | 60.82 | 2.86 | 22 |
| 19 | 08/15/2025 | 07:44:23 | -74.40,-127.99 | 119.18 | 08/15/2025 | 07:44:43 | -74.40,-128.03 | 119.18 | 1.28 | 20 |
| 20 | 08/15/2025 | 08:35:08 | 74.39, 39.35 | 60.82 | 08/15/2025 | 08:35:23 | 74.40, 39.31 | 60.83 | 1.93 | 15 |
| 21 | 08/15/2025 | 09:25:53 | -74.40,-153.38 | 119.16 | 08/15/2025 | 09:26:05 | -74.38,-153.41 | 119.17 | 2.40 | 12 |
| 22 | 08/15/2025 | 10:16:38 | 74.39, 13.96 | 60.85 | 08/15/2025 | 10:16:45 | 74.38, 13.92 | 60.84 | 1.42 | 7 |
| 23 | 08/15/2025 | 11:07:23 | -74.41,-178.76 | 119.13 | 08/15/2025 | 11:07:26 | -74.42,-178.67 | 119.13 | 3.01 | 3 |
| 24 | 08/15/2025 | 11:58:08 | 74.40, -11.43 | 60.88 | 08/15/2025 | 11:58:07 | 74.37, -11.46 | 60.85 | 3.37 | 1 |
| 25 | 08/15/2025 | 12:48:53 | -74.41, 155.85 | 119.10 | 08/15/2025 | 12:48:48 | -74.40, 155.95 | 119.12 | 3.31 | 5 |
| 26 | 08/15/2025 | 13:39:38 | 74.40, -36.82 | 60.90 | 08/15/2025 | 13:39:28 | 74.40, -36.71 | 60.90 | 3.02 | 10 |
| 27 | 08/15/2025 | 14:30:22 | -74.37, 130.59 | 119.13 | 08/15/2025 | 14:30:10 | -74.38, 130.57 | 119.11 | 1.85 | 12 |
| 28 | 08/15/2025 | 15:21:07 | 74.36, -62.08 | 60.88 | 08/15/2025 | 15:20:50 | 74.39, -62.10 | 60.91 | 3.02 | 17 |
| 29 | 08/15/2025 | 16:11:52 | -74.37, 105.20 | 119.10 | 08/15/2025 | 16:11:32 | -74.37, 105.19 | 119.10 | 0.66 | 20 |
| 30 | 08/15/2025 | 17:02:37 | 74.36, -87.46 | 60.90 | 08/15/2025 | 17:02:12 | 74.37, -87.48 | 60.92 | 0.74 | 25 |
| 31 | 08/15/2025 | 17:53:22 | -74.38, 79.81 | 119.07 | 08/15/2025 | 17:52:54 | -74.35, 79.81 | 119.09 | 2.87 | 28 |
| 32 | 08/15/2025 | 18:44:07 | 74.37,-112.85 | 60.93 | 08/15/2025 | 18:43:34 | 74.35,-112.86 | 60.93 | 1.75 | 33 |
| 33 | 08/15/2025 | 19:34:51 | -74.34, 54.55 | 119.10 | 08/15/2025 | 19:34:16 | -74.34, 54.42 | 119.08 | 3.76 | 35 |
| 34 | 08/15/2025 | 20:25:37 | 74.37,-138.24 | 60.96 | 08/15/2025 | 20:24:55 | 74.39,-138.12 | 60.98 | 3.95 | 42 |
| 35 | 08/15/2025 | 21:16:21 | -74.34, 29.16 | 119.07 | 08/15/2025 | 21:15:37 | -74.37, 29.17 | 119.03 | 3.36 | 44 |
| 36 | 08/15/2025 | 22:07:06 | 74.33,-163.50 | 60.93 | 08/15/2025 | 22:06:18 | 74.32,-163.62 | 60.95 | 3.78 | 48 |
| 37 | 08/15/2025 | 22:57:51 | -74.35, 3.77 | 119.04 | 08/15/2025 | 22:56:59 | -74.35, 3.79 | 119.02 | 1.10 | 52 |
| 38 | 08/15/2025 | 23:48:36 | 74.34, 171.11 | 60.96 | 08/15/2025 | 23:47:39 | 74.36, 171.12 | 60.99 | 2.14 | 57 |
| 39 | 08/16/2025 | 00:39:21 | -74.35, -21.61 | 119.02 | 08/16/2025 | 00:38:21 | -74.34, -21.59 | 119.01 | 1.41 | 60 |
| 40 | 08/16/2025 | 01:30:06 | 74.34, 145.72 | 60.99 | 08/16/2025 | 01:29:01 | 74.34, 145.74 | 61.00 | 0.53 | 65 |
| 41 | 08/16/2025 | 02:20:50 | -74.31, -46.88 | 119.04 | 08/16/2025 | 02:19:43 | -74.32, -46.98 | 119.00 | 3.51 | 67 |
| 42 | 08/16/2025 | 03:11:36 | 74.35, 120.33 | 61.02 | 08/16/2025 | 03:10:23 | 74.32, 120.36 | 61.01 | 2.67 | 73 |
| 43 | 08/16/2025 | 04:02:20 | -74.31, -72.26 | 119.02 | 08/16/2025 | 04:01:05 | -74.31, -72.36 | 118.99 | 2.87 | 75 |
| 44 | 08/16/2025 | 04:53:01 | 74.11, 95.57 | 60.77 | 08/16/2025 | 04:51:49 | 74.11, 94.49 | 60.86 | 33.01 | 72 |
| 45 | 08/16/2025 | 05:43:44 | -74.02, -96.91 | 119.32 | 08/16/2025 | 05:42:33 | -74.00, -98.46 | 119.22 | 47.64 | 71 |
| 46 | 08/16/2025 | 06:34:24 | 73.77, 71.03 | 60.40 | 08/16/2025 | 06:33:17 | 73.79, 68.39 | 60.63 | 81.79 | 67 |
| 47 | 08/16/2025 | 07:25:07 | -73.68,-121.47 | 119.68 | 08/16/2025 | 07:24:01 | -73.68,-124.54 | 119.45 | 96.05 | 66 |
Figure of NOAA-21 and METOP-B satellite orbits during SNOs since TLE Epoch: 8/11/2025
Download SNOs between NOAA-21 and METOP-B since TLE EPOCH: 08/11/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and METOP-B