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: 10/2/2025
| 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 | 75.12, 5.71 | 80.61 | 10/06/2025 | 10:42:53 | 75.04, 9.11 | 80.37 | 97.95 | 65 |
| 2 | 10/06/2025 | 11:32:30 | -75.05, 173.24 | 99.46 | 10/06/2025 | 11:33:36 | -75.03, 176.42 | 99.62 | 91.30 | 66 |
| 3 | 10/06/2025 | 12:23:11 | 74.80, -18.74 | 80.27 | 10/06/2025 | 12:24:21 | 74.75, -17.03 | 80.14 | 50.25 | 70 |
| 4 | 10/06/2025 | 13:13:54 | -74.77, 148.65 | 99.75 | 10/06/2025 | 13:15:04 | -74.75, 150.29 | 99.85 | 47.89 | 70 |
| 5 | 10/06/2025 | 14:04:35 | 74.52, -43.35 | 79.99 | 10/06/2025 | 14:05:49 | 74.46, -43.14 | 79.91 | 8.56 | 74 |
| 6 | 10/06/2025 | 14:55:18 | -74.49, 124.03 | 100.03 | 10/06/2025 | 14:56:32 | -74.46, 124.18 | 100.08 | 5.45 | 74 |
| 7 | 10/06/2025 | 15:46:03 | 74.43, -68.49 | 79.92 | 10/06/2025 | 15:47:12 | 74.42, -68.59 | 79.90 | 3.21 | 69 |
| 8 | 10/06/2025 | 16:36:47 | -74.45, 98.76 | 100.05 | 10/06/2025 | 16:37:54 | -74.47, 98.85 | 100.05 | 3.00 | 67 |
| 9 | 10/06/2025 | 17:27:33 | 74.44, -93.89 | 79.95 | 10/06/2025 | 17:28:34 | 74.42, -93.92 | 79.93 | 1.74 | 61 |
| 10 | 10/06/2025 | 18:18:16 | -74.41, 73.49 | 100.06 | 10/06/2025 | 18:19:17 | -74.42, 73.39 | 100.06 | 3.18 | 61 |
| 11 | 10/06/2025 | 19:09:03 | 74.45,-119.29 | 79.99 | 10/06/2025 | 19:09:56 | 74.43,-119.25 | 79.96 | 2.14 | 53 |
| 12 | 10/06/2025 | 19:59:46 | -74.42, 48.10 | 100.03 | 10/06/2025 | 20:00:39 | -74.43, 48.06 | 100.03 | 1.12 | 53 |
| 13 | 10/06/2025 | 20:50:32 | 74.41,-144.56 | 79.97 | 10/06/2025 | 20:51:18 | 74.43,-144.58 | 79.99 | 3.12 | 46 |
| 14 | 10/06/2025 | 21:41:16 | -74.43, 22.70 | 99.99 | 10/06/2025 | 21:42:01 | -74.43, 22.73 | 100.00 | 1.08 | 45 |
| 15 | 10/06/2025 | 22:32:02 | 74.42,-169.95 | 80.01 | 10/06/2025 | 22:32:40 | 74.44,-169.91 | 80.03 | 2.82 | 38 |
| 16 | 10/06/2025 | 23:22:46 | -74.44, -2.70 | 99.95 | 10/06/2025 | 23:23:23 | -74.44, -2.60 | 99.97 | 3.14 | 37 |
| 17 | 10/07/2025 | 00:13:32 | 74.43, 164.65 | 80.05 | 10/07/2025 | 00:14:03 | 74.39, 164.63 | 80.01 | 3.46 | 31 |
| 18 | 10/07/2025 | 01:04:15 | -74.40, -27.97 | 99.97 | 10/07/2025 | 01:04:46 | -74.39, -28.05 | 99.98 | 2.60 | 31 |
| 19 | 10/07/2025 | 01:55:01 | 74.39, 139.38 | 80.03 | 10/07/2025 | 01:55:25 | 74.40, 139.30 | 80.04 | 2.70 | 24 |
| 20 | 10/07/2025 | 02:45:45 | -74.41, -53.37 | 99.93 | 10/07/2025 | 02:46:08 | -74.40, -53.38 | 99.95 | 1.49 | 23 |
| 21 | 10/07/2025 | 03:36:31 | 74.40, 113.98 | 80.07 | 10/07/2025 | 03:36:47 | 74.40, 113.97 | 80.07 | 1.00 | 16 |
| 22 | 10/07/2025 | 04:27:15 | -74.42, -78.77 | 99.90 | 10/07/2025 | 04:27:30 | -74.40, -78.71 | 99.92 | 2.54 | 15 |
| 23 | 10/07/2025 | 05:18:01 | 74.40, 88.58 | 80.11 | 10/07/2025 | 05:18:09 | 74.41, 88.64 | 80.11 | 1.88 | 8 |
| 24 | 10/07/2025 | 06:08:44 | -74.38,-104.04 | 99.91 | 10/07/2025 | 06:08:52 | -74.41,-104.04 | 99.89 | 2.95 | 8 |
| 25 | 10/07/2025 | 06:59:30 | 74.37, 63.31 | 80.09 | 10/07/2025 | 06:59:32 | 74.36, 63.18 | 80.09 | 3.73 | 2 |
| 26 | 10/07/2025 | 07:50:14 | -74.39,-129.44 | 99.88 | 10/07/2025 | 07:50:14 | -74.41,-129.37 | 99.86 | 3.11 | 0 |
| 27 | 10/07/2025 | 08:41:00 | 74.37, 37.91 | 80.13 | 10/07/2025 | 08:40:54 | 74.37, 37.85 | 80.12 | 1.79 | 6 |
| 28 | 10/07/2025 | 09:31:44 | -74.40,-154.83 | 99.84 | 10/07/2025 | 09:31:37 | -74.37,-154.83 | 99.87 | 3.49 | 7 |
| 29 | 10/07/2025 | 10:22:30 | 74.38, 12.51 | 80.16 | 10/07/2025 | 10:22:16 | 74.37, 12.52 | 80.15 | 1.17 | 14 |
| 30 | 10/07/2025 | 11:13:13 | -74.36, 179.89 | 99.86 | 10/07/2025 | 11:12:59 | -74.37, 179.84 | 99.84 | 2.10 | 14 |
| 31 | 10/07/2025 | 12:04:00 | 74.39, -12.89 | 80.20 | 10/07/2025 | 12:03:38 | 74.38, -12.81 | 80.19 | 2.90 | 22 |
| 32 | 10/07/2025 | 12:54:43 | -74.37, 154.50 | 99.82 | 10/07/2025 | 12:54:21 | -74.38, 154.51 | 99.81 | 1.00 | 22 |
| 33 | 10/07/2025 | 13:45:29 | 74.35, -38.16 | 80.18 | 10/07/2025 | 13:45:00 | 74.38, -38.14 | 80.22 | 3.32 | 29 |
| 34 | 10/07/2025 | 14:36:13 | -74.38, 129.10 | 99.78 | 10/07/2025 | 14:35:43 | -74.38, 129.18 | 99.78 | 2.53 | 30 |
| 35 | 10/07/2025 | 15:26:59 | 74.36, -63.56 | 80.22 | 10/07/2025 | 15:26:23 | 74.34, -63.59 | 80.20 | 2.94 | 36 |
| 36 | 10/07/2025 | 16:17:42 | -74.34, 103.83 | 99.80 | 10/07/2025 | 16:17:06 | -74.34, 103.73 | 99.79 | 3.02 | 36 |
| 37 | 10/07/2025 | 17:08:29 | 74.37, -88.95 | 80.26 | 10/07/2025 | 17:07:45 | 74.34, -88.92 | 80.23 | 3.38 | 44 |
| 38 | 10/07/2025 | 17:59:12 | -74.35, 78.43 | 99.76 | 10/07/2025 | 17:58:28 | -74.34, 78.39 | 99.76 | 1.20 | 44 |
| 39 | 10/07/2025 | 18:49:58 | 74.33,-114.23 | 80.24 | 10/07/2025 | 18:49:07 | 74.35,-114.25 | 80.26 | 1.84 | 51 |
| 40 | 10/07/2025 | 19:40:42 | -74.36, 53.03 | 99.72 | 10/07/2025 | 19:39:50 | -74.35, 53.06 | 99.73 | 1.62 | 52 |
| 41 | 10/07/2025 | 20:31:28 | 74.34,-139.62 | 80.28 | 10/07/2025 | 20:30:29 | 74.35,-139.58 | 80.30 | 1.65 | 59 |
| 42 | 10/07/2025 | 21:22:12 | -74.37, 27.63 | 99.69 | 10/07/2025 | 21:21:12 | -74.35, 27.73 | 99.70 | 3.56 | 60 |
| 43 | 10/07/2025 | 22:12:58 | 74.35,-165.02 | 80.31 | 10/07/2025 | 22:11:51 | 74.36,-164.91 | 80.33 | 3.30 | 67 |
| 44 | 10/07/2025 | 23:03:40 | -74.33, 2.36 | 99.70 | 10/07/2025 | 23:02:34 | -74.31, 2.28 | 99.71 | 3.34 | 66 |
| 45 | 10/07/2025 | 23:54:26 | 74.31, 169.71 | 80.30 | 10/07/2025 | 23:53:13 | 74.31, 169.63 | 80.31 | 2.27 | 73 |
| 46 | 10/08/2025 | 00:45:10 | -74.34, -23.04 | 99.67 | 10/08/2025 | 00:43:56 | -74.31, -23.05 | 99.68 | 2.87 | 74 |
| 47 | 10/08/2025 | 01:35:51 | 74.08, 144.93 | 80.07 | 10/08/2025 | 01:34:40 | 74.07, 143.68 | 80.13 | 38.07 | 71 |
| 48 | 10/08/2025 | 02:26:34 | -74.05, -47.70 | 99.95 | 10/08/2025 | 02:25:23 | -74.07, -49.00 | 99.87 | 39.85 | 71 |
| 49 | 10/08/2025 | 03:17:15 | 73.79, 120.25 | 79.78 | 10/08/2025 | 03:16:08 | 73.78, 117.63 | 79.90 | 81.46 | 67 |
| 50 | 10/08/2025 | 04:07:58 | -73.77, -72.37 | 100.23 | 10/08/2025 | 04:06:51 | -73.78, -75.05 | 100.09 | 83.02 | 67 |
Figure of NOAA-21 and METOP-B satellite orbits during SNOs since TLE Epoch: 10/2/2025
Download SNOs between NOAA-21 and METOP-B since TLE EPOCH: 10/02/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and METOP-B