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: 10/3/2025
| 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 | 10/06/2025 | 10:41:48 | 75.10, 5.77 | 80.59 | 10/06/2025 | 10:42:53 | 75.06, 9.17 | 80.39 | 97.64 | 65 |
| 2 | 10/06/2025 | 11:32:31 | -75.08, 173.16 | 99.43 | 10/06/2025 | 11:33:37 | -75.00, 176.34 | 99.65 | 91.74 | 66 |
| 3 | 10/06/2025 | 12:23:12 | 74.83, -18.82 | 80.30 | 10/06/2025 | 12:24:21 | 74.77, -16.97 | 80.16 | 54.18 | 69 |
| 4 | 10/06/2025 | 13:13:55 | -74.80, 148.57 | 99.71 | 10/06/2025 | 13:15:05 | -74.72, 150.21 | 99.88 | 48.75 | 70 |
| 5 | 10/06/2025 | 14:04:36 | 74.54, -43.42 | 80.02 | 10/06/2025 | 14:05:49 | 74.49, -43.08 | 79.93 | 12.10 | 73 |
| 6 | 10/06/2025 | 14:55:19 | -74.52, 123.96 | 100.00 | 10/06/2025 | 14:56:32 | -74.48, 124.23 | 100.06 | 9.27 | 73 |
| 7 | 10/06/2025 | 15:46:04 | 74.46, -68.56 | 79.95 | 10/06/2025 | 15:47:12 | 74.44, -68.54 | 79.92 | 1.82 | 68 |
| 8 | 10/06/2025 | 16:36:47 | -74.43, 98.81 | 100.07 | 10/06/2025 | 16:37:55 | -74.44, 98.77 | 100.07 | 1.28 | 68 |
| 9 | 10/06/2025 | 17:27:33 | 74.42, -93.83 | 79.93 | 10/06/2025 | 17:28:34 | 74.45, -93.87 | 79.95 | 3.41 | 61 |
| 10 | 10/06/2025 | 18:18:17 | -74.44, 73.42 | 100.03 | 10/06/2025 | 18:19:17 | -74.44, 73.44 | 100.04 | 0.85 | 60 |
| 11 | 10/06/2025 | 19:09:03 | 74.43,-119.23 | 79.97 | 10/06/2025 | 19:09:56 | 74.45,-119.20 | 79.98 | 2.95 | 53 |
| 12 | 10/06/2025 | 19:59:47 | -74.45, 48.02 | 99.99 | 10/06/2025 | 20:00:39 | -74.45, 48.11 | 100.01 | 2.93 | 52 |
| 13 | 10/06/2025 | 20:50:33 | 74.44,-144.63 | 80.01 | 10/06/2025 | 20:51:19 | 74.41,-144.65 | 79.97 | 3.27 | 46 |
| 14 | 10/06/2025 | 21:41:16 | -74.41, 22.75 | 100.01 | 10/06/2025 | 21:42:02 | -74.40, 22.66 | 100.02 | 2.86 | 46 |
| 15 | 10/06/2025 | 22:32:02 | 74.40,-169.90 | 79.99 | 10/06/2025 | 22:32:41 | 74.41,-169.98 | 80.00 | 3.00 | 39 |
| 16 | 10/06/2025 | 23:22:46 | -74.42, -2.65 | 99.97 | 10/06/2025 | 23:23:24 | -74.41, -2.67 | 99.99 | 1.68 | 38 |
| 17 | 10/07/2025 | 00:13:31 | 74.41, 164.70 | 80.03 | 10/07/2025 | 00:14:02 | 74.42, 164.69 | 80.03 | 1.26 | 31 |
| 18 | 10/07/2025 | 01:04:15 | -74.43, -28.05 | 99.94 | 10/07/2025 | 01:04:45 | -74.41, -28.00 | 99.96 | 2.51 | 30 |
| 19 | 10/07/2025 | 01:55:01 | 74.41, 139.30 | 80.06 | 10/07/2025 | 01:55:24 | 74.42, 139.36 | 80.06 | 1.74 | 23 |
| 20 | 10/07/2025 | 02:45:44 | -74.39, -53.32 | 99.95 | 10/07/2025 | 02:46:07 | -74.42, -53.33 | 99.93 | 2.83 | 23 |
| 21 | 10/07/2025 | 03:36:31 | 74.42, 113.90 | 80.10 | 10/07/2025 | 03:36:46 | 74.43, 114.02 | 80.09 | 3.65 | 15 |
| 22 | 10/07/2025 | 04:27:14 | -74.40, -78.72 | 99.92 | 10/07/2025 | 04:27:29 | -74.42, -78.66 | 99.90 | 2.85 | 15 |
| 23 | 10/07/2025 | 05:18:00 | 74.38, 88.63 | 80.08 | 10/07/2025 | 05:18:09 | 74.38, 88.57 | 80.08 | 1.96 | 9 |
| 24 | 10/07/2025 | 06:08:44 | -74.41,-104.12 | 99.88 | 10/07/2025 | 06:08:52 | -74.38,-104.12 | 99.91 | 3.64 | 8 |
| 25 | 10/07/2025 | 06:59:30 | 74.39, 63.23 | 80.12 | 10/07/2025 | 06:59:31 | 74.39, 63.24 | 80.11 | 0.94 | 1 |
| 26 | 10/07/2025 | 07:50:13 | -74.37,-129.39 | 99.90 | 10/07/2025 | 07:50:14 | -74.38,-129.45 | 99.88 | 2.19 | 1 |
| 27 | 10/07/2025 | 08:41:00 | 74.40, 37.84 | 80.16 | 10/07/2025 | 08:40:53 | 74.39, 37.91 | 80.14 | 2.61 | 7 |
| 28 | 10/07/2025 | 09:31:43 | -74.38,-154.79 | 99.86 | 10/07/2025 | 09:31:36 | -74.39,-154.78 | 99.85 | 0.75 | 7 |
| 29 | 10/07/2025 | 10:22:29 | 74.36, 12.56 | 80.14 | 10/07/2025 | 10:22:15 | 74.39, 12.58 | 80.17 | 3.45 | 14 |
| 30 | 10/07/2025 | 11:13:13 | -74.39, 179.81 | 99.82 | 10/07/2025 | 11:12:58 | -74.39, 179.89 | 99.82 | 2.27 | 15 |
| 31 | 10/07/2025 | 12:03:59 | 74.37, -12.83 | 80.18 | 10/07/2025 | 12:03:38 | 74.35, -12.88 | 80.16 | 2.88 | 21 |
| 32 | 10/07/2025 | 12:54:42 | -74.35, 154.54 | 99.84 | 10/07/2025 | 12:54:21 | -74.35, 154.43 | 99.83 | 3.28 | 21 |
| 33 | 10/07/2025 | 13:45:29 | 74.38, -38.23 | 80.21 | 10/07/2025 | 13:45:00 | 74.35, -38.21 | 80.19 | 3.17 | 29 |
| 34 | 10/07/2025 | 14:36:12 | -74.36, 129.14 | 99.80 | 10/07/2025 | 14:35:43 | -74.35, 129.10 | 99.80 | 1.51 | 29 |
| 35 | 10/07/2025 | 15:26:58 | 74.34, -63.50 | 80.20 | 10/07/2025 | 15:26:22 | 74.36, -63.54 | 80.22 | 2.09 | 36 |
| 36 | 10/07/2025 | 16:17:42 | -74.37, 103.75 | 99.77 | 10/07/2025 | 16:17:05 | -74.36, 103.77 | 99.77 | 1.64 | 37 |
| 37 | 10/07/2025 | 17:08:28 | 74.35, -88.90 | 80.24 | 10/07/2025 | 17:07:44 | 74.36, -88.87 | 80.25 | 1.59 | 44 |
| 38 | 10/07/2025 | 17:59:12 | -74.38, 78.35 | 99.73 | 10/07/2025 | 17:58:27 | -74.36, 78.44 | 99.74 | 3.45 | 45 |
| 39 | 10/07/2025 | 18:49:58 | 74.36,-114.30 | 80.27 | 10/07/2025 | 18:49:06 | 74.37,-114.20 | 80.28 | 3.10 | 52 |
| 40 | 10/07/2025 | 19:40:41 | -74.34, 53.08 | 99.74 | 10/07/2025 | 19:39:49 | -74.37, 53.11 | 99.71 | 3.11 | 52 |
| 41 | 10/07/2025 | 20:31:27 | 74.32,-139.57 | 80.26 | 10/07/2025 | 20:30:29 | 74.32,-139.66 | 80.27 | 2.52 | 58 |
| 42 | 10/07/2025 | 21:22:11 | -74.35, 27.68 | 99.71 | 10/07/2025 | 21:21:12 | -74.32, 27.66 | 99.72 | 3.12 | 59 |
| 43 | 10/07/2025 | 22:12:57 | 74.33,-164.97 | 80.29 | 10/07/2025 | 22:11:51 | 74.33,-164.99 | 80.30 | 0.63 | 66 |
| 44 | 10/07/2025 | 23:03:40 | -74.31, 2.41 | 99.72 | 10/07/2025 | 23:02:34 | -74.33, 2.33 | 99.69 | 2.99 | 66 |
| 45 | 10/07/2025 | 23:54:27 | 74.34, 169.63 | 80.33 | 10/07/2025 | 23:53:13 | 74.33, 169.68 | 80.33 | 1.83 | 74 |
| 46 | 10/08/2025 | 00:45:10 | -74.32, -22.99 | 99.69 | 10/08/2025 | 00:43:56 | -74.33, -23.00 | 99.66 | 1.31 | 74 |
| 47 | 10/08/2025 | 01:35:52 | 74.11, 144.85 | 80.10 | 10/08/2025 | 01:34:40 | 74.09, 143.73 | 80.14 | 34.27 | 72 |
| 48 | 10/08/2025 | 02:26:35 | -74.08, -47.77 | 99.92 | 10/08/2025 | 02:25:23 | -74.09, -48.95 | 99.85 | 36.00 | 72 |
| 49 | 10/08/2025 | 03:17:15 | 73.77, 120.30 | 79.76 | 10/08/2025 | 03:16:08 | 73.80, 117.68 | 79.91 | 81.47 | 67 |
| 50 | 10/08/2025 | 04:07:59 | -73.80, -72.45 | 100.20 | 10/08/2025 | 04:06:51 | -73.80, -75.00 | 100.08 | 79.20 | 68 |
Figure of NOAA-21 and METOP-B satellite orbits during SNOs since TLE Epoch: 10/3/2025
Download SNOs between NOAA-21 and METOP-B since TLE EPOCH: 10/03/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and METOP-B