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: 8/6/2025
| 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 | -75.13, 98.34 | 118.52 | 08/14/2025 | 16:32:15 | -75.06, 101.81 | 118.84 | 99.48 | 65 |
| 2 | 08/14/2025 | 17:21:51 | 74.94, -93.79 | 61.27 | 08/14/2025 | 17:22:59 | 74.87, -91.39 | 61.02 | 69.89 | 68 |
| 3 | 08/14/2025 | 18:12:33 | -74.81, 73.91 | 118.89 | 08/14/2025 | 18:13:43 | -74.76, 75.63 | 119.07 | 50.64 | 70 |
| 4 | 08/14/2025 | 19:03:15 | 74.66,-118.37 | 60.96 | 08/14/2025 | 19:04:27 | 74.56,-117.55 | 60.79 | 26.53 | 72 |
| 5 | 08/14/2025 | 19:53:57 | -74.52, 49.30 | 119.19 | 08/14/2025 | 19:55:10 | -74.50, 49.61 | 119.26 | 9.47 | 73 |
| 6 | 08/14/2025 | 20:44:41 | 74.47,-143.24 | 60.76 | 08/14/2025 | 20:45:51 | 74.45,-143.19 | 60.72 | 2.97 | 70 |
| 7 | 08/14/2025 | 21:35:25 | -74.43, 24.17 | 119.28 | 08/14/2025 | 21:36:33 | -74.43, 24.10 | 119.29 | 2.12 | 68 |
| 8 | 08/14/2025 | 22:26:10 | 74.42,-168.50 | 60.73 | 08/14/2025 | 22:27:13 | 74.43,-168.57 | 60.73 | 2.12 | 63 |
| 9 | 08/14/2025 | 23:16:55 | -74.43, -1.22 | 119.25 | 08/14/2025 | 23:17:55 | -74.42, -1.28 | 119.28 | 2.79 | 60 |
| 10 | 08/15/2025 | 00:07:40 | 74.43, 166.11 | 60.76 | 08/15/2025 | 00:08:35 | 74.41, 166.05 | 60.73 | 2.53 | 55 |
| 11 | 08/15/2025 | 00:58:25 | -74.44, -26.60 | 119.22 | 08/15/2025 | 00:59:16 | -74.45, -26.54 | 119.23 | 2.31 | 51 |
| 12 | 08/15/2025 | 01:49:10 | 74.43, 140.72 | 60.79 | 08/15/2025 | 01:49:56 | 74.45, 140.79 | 60.78 | 2.52 | 46 |
| 13 | 08/15/2025 | 02:39:55 | -74.44, -51.99 | 119.19 | 08/15/2025 | 02:40:38 | -74.43, -51.92 | 119.22 | 2.50 | 43 |
| 14 | 08/15/2025 | 03:30:40 | 74.44, 115.33 | 60.82 | 08/15/2025 | 03:31:18 | 74.43, 115.41 | 60.79 | 2.44 | 38 |
| 15 | 08/15/2025 | 04:21:24 | -74.40, -77.25 | 119.22 | 08/15/2025 | 04:22:00 | -74.42, -77.30 | 119.21 | 2.39 | 36 |
| 16 | 08/15/2025 | 05:12:09 | 74.40, 90.07 | 60.79 | 08/15/2025 | 05:12:40 | 74.42, 90.03 | 60.80 | 2.58 | 31 |
| 17 | 08/15/2025 | 06:02:54 | -74.41,-102.64 | 119.19 | 08/15/2025 | 06:03:22 | -74.40,-102.68 | 119.20 | 1.25 | 28 |
| 18 | 08/15/2025 | 06:53:39 | 74.40, 64.69 | 60.82 | 08/15/2025 | 06:54:02 | 74.40, 64.65 | 60.81 | 1.17 | 23 |
| 19 | 08/15/2025 | 07:44:24 | -74.41,-128.03 | 119.17 | 08/15/2025 | 07:44:44 | -74.39,-128.06 | 119.19 | 2.83 | 20 |
| 20 | 08/15/2025 | 08:35:09 | 74.41, 39.30 | 60.84 | 08/15/2025 | 08:35:24 | 74.38, 39.27 | 60.82 | 2.64 | 15 |
| 21 | 08/15/2025 | 09:25:54 | -74.42,-153.41 | 119.14 | 08/15/2025 | 09:26:05 | -74.42,-153.32 | 119.14 | 2.96 | 11 |
| 22 | 08/15/2025 | 10:16:39 | 74.41, 13.91 | 60.87 | 08/15/2025 | 10:16:45 | 74.42, 14.01 | 60.87 | 3.04 | 6 |
| 23 | 08/15/2025 | 11:07:24 | -74.42,-178.80 | 119.11 | 08/15/2025 | 11:07:27 | -74.40,-178.70 | 119.14 | 3.59 | 3 |
| 24 | 08/15/2025 | 11:58:09 | 74.42, -11.48 | 60.90 | 08/15/2025 | 11:58:07 | 74.40, -11.37 | 60.88 | 3.54 | 2 |
| 25 | 08/15/2025 | 12:48:53 | -74.38, 155.94 | 119.14 | 08/15/2025 | 12:48:49 | -74.39, 155.92 | 119.13 | 1.40 | 4 |
| 26 | 08/15/2025 | 13:39:38 | 74.37, -36.74 | 60.87 | 08/15/2025 | 13:39:29 | 74.39, -36.75 | 60.89 | 1.55 | 9 |
| 27 | 08/15/2025 | 14:30:23 | -74.38, 130.55 | 119.11 | 08/15/2025 | 14:30:11 | -74.37, 130.54 | 119.12 | 1.02 | 12 |
| 28 | 08/15/2025 | 15:21:08 | 74.38, -62.13 | 60.90 | 08/15/2025 | 15:20:51 | 74.37, -62.14 | 60.90 | 0.90 | 17 |
| 29 | 08/15/2025 | 16:11:53 | -74.39, 105.16 | 119.08 | 08/15/2025 | 16:11:33 | -74.36, 105.16 | 119.11 | 3.28 | 20 |
| 30 | 08/15/2025 | 17:02:38 | 74.38, -87.51 | 60.93 | 08/15/2025 | 17:02:13 | 74.35, -87.52 | 60.91 | 3.19 | 25 |
| 31 | 08/15/2025 | 17:53:22 | -74.34, 79.90 | 119.11 | 08/15/2025 | 17:52:55 | -74.34, 79.78 | 119.10 | 3.67 | 27 |
| 32 | 08/15/2025 | 18:44:07 | 74.34,-112.77 | 60.90 | 08/15/2025 | 18:43:35 | 74.34,-112.90 | 60.91 | 3.70 | 32 |
| 33 | 08/15/2025 | 19:34:52 | -74.35, 54.51 | 119.08 | 08/15/2025 | 19:34:16 | -74.38, 54.52 | 119.05 | 2.99 | 36 |
| 34 | 08/15/2025 | 20:25:37 | 74.34,-138.16 | 60.93 | 08/15/2025 | 20:24:56 | 74.37,-138.15 | 60.96 | 3.07 | 41 |
| 35 | 08/15/2025 | 21:16:22 | -74.35, 29.13 | 119.06 | 08/15/2025 | 21:15:38 | -74.36, 29.14 | 119.04 | 0.81 | 44 |
| 36 | 08/15/2025 | 22:07:07 | 74.35,-163.55 | 60.95 | 08/15/2025 | 22:06:18 | 74.36,-163.54 | 60.97 | 0.84 | 49 |
| 37 | 08/15/2025 | 22:57:52 | -74.36, 3.74 | 119.03 | 08/15/2025 | 22:57:00 | -74.34, 3.76 | 119.03 | 1.75 | 52 |
| 38 | 08/15/2025 | 23:48:37 | 74.35, 171.06 | 60.98 | 08/15/2025 | 23:47:40 | 74.34, 171.08 | 60.98 | 1.72 | 57 |
| 39 | 08/16/2025 | 00:39:21 | -74.32, -21.52 | 119.06 | 08/16/2025 | 00:38:22 | -74.33, -21.62 | 119.02 | 3.28 | 59 |
| 40 | 08/16/2025 | 01:30:06 | 74.31, 145.80 | 60.95 | 08/16/2025 | 01:29:02 | 74.32, 145.70 | 60.99 | 3.33 | 64 |
| 41 | 08/16/2025 | 02:20:51 | -74.32, -46.91 | 119.03 | 08/16/2025 | 02:19:44 | -74.31, -47.00 | 119.01 | 2.85 | 67 |
| 42 | 08/16/2025 | 03:11:35 | 74.32, 120.41 | 60.98 | 08/16/2025 | 03:10:23 | 74.31, 120.32 | 61.00 | 2.91 | 72 |
| 43 | 08/16/2025 | 04:02:20 | -74.33, -72.30 | 119.00 | 08/16/2025 | 04:01:05 | -74.30, -72.38 | 119.00 | 4.03 | 75 |
| 44 | 08/16/2025 | 04:53:01 | 74.13, 95.52 | 60.79 | 08/16/2025 | 04:51:49 | 74.09, 94.45 | 60.85 | 32.84 | 72 |
| 45 | 08/16/2025 | 05:43:43 | -73.99, -96.82 | 119.36 | 08/16/2025 | 05:42:33 | -73.99, -98.49 | 119.23 | 51.02 | 70 |
| 46 | 08/16/2025 | 06:34:24 | 73.78, 70.98 | 60.42 | 08/16/2025 | 06:33:17 | 73.78, 68.36 | 60.62 | 81.39 | 67 |
| 47 | 08/16/2025 | 07:25:07 | -73.70,-121.50 | 119.67 | 08/16/2025 | 07:24:01 | -73.67,-124.56 | 119.46 | 95.80 | 66 |
Figure of NOAA-21 and METOP-B satellite orbits during SNOs since TLE Epoch: 8/6/2025
Download SNOs between NOAA-21 and METOP-B since TLE EPOCH: 08/06/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and METOP-B