Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-8 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/17/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-8) | Time (LANDSAT-8) | Lat,Lon (LANDSAT-8) | SZA (LANDSAT-8 ) | Distance(km) | Time Diff (sec) |
| 1 | 10/17/2025 | 07:10:34 | 70.10, 68.67 | 79.37 | 10/17/2025 | 07:11:01 | 70.08, 68.73 | 79.35 | 2.96 | 27 |
| 2 | 10/17/2025 | 08:01:14 | -69.94,-123.77 | 100.78 | 10/17/2025 | 08:00:31 | -69.97,-123.80 | 100.76 | 2.89 | 43 |
| 3 | 10/19/2025 | 22:36:47 | -70.55, 16.44 | 99.23 | 10/19/2025 | 22:37:57 | -70.46, 17.51 | 99.32 | 40.99 | 70 |
| 4 | 10/19/2025 | 23:27:24 | 70.04,-175.45 | 80.28 | 10/19/2025 | 23:27:30 | 70.02,-175.47 | 80.26 | 1.96 | 6 |
| 5 | 10/20/2025 | 00:18:05 | -69.93, -7.97 | 99.82 | 10/20/2025 | 00:17:00 | -69.91, -8.00 | 99.85 | 2.58 | 65 |
| 6 | 10/22/2025 | 14:53:30 | -70.13, 132.90 | 98.70 | 10/22/2025 | 14:54:30 | -70.15, 132.95 | 98.68 | 3.28 | 60 |
| 7 | 10/22/2025 | 15:44:14 | 69.99, -59.58 | 81.17 | 10/22/2025 | 15:43:58 | 69.99, -59.63 | 81.17 | 2.05 | 16 |
| 8 | 10/22/2025 | 16:34:46 | -69.40, 108.60 | 99.40 | 10/22/2025 | 16:33:36 | -69.44, 107.25 | 99.37 | 53.21 | 70 |
| 9 | 10/25/2025 | 07:10:19 | -70.08,-111.24 | 97.82 | 10/25/2025 | 07:10:57 | -70.09,-111.24 | 97.81 | 0.89 | 38 |
| 10 | 10/25/2025 | 08:01:04 | 70.00, 56.20 | 82.12 | 10/25/2025 | 08:00:24 | 69.98, 56.24 | 82.09 | 2.85 | 40 |
| 11 | 10/27/2025 | 22:36:37 | 70.64,-163.64 | 83.64 | 10/27/2025 | 22:37:47 | 70.54,-162.33 | 83.55 | 49.90 | 70 |
| 12 | 10/27/2025 | 23:27:09 | -70.05, 4.61 | 96.95 | 10/27/2025 | 23:27:24 | -70.05, 4.60 | 96.94 | 1.10 | 15 |
| 13 | 10/28/2025 | 00:17:53 | 69.91, 172.12 | 82.94 | 10/28/2025 | 00:16:51 | 69.94, 172.08 | 82.96 | 3.23 | 62 |
| 14 | 10/30/2025 | 14:53:18 | 70.14, -47.07 | 84.03 | 10/30/2025 | 14:54:20 | 70.15, -47.01 | 84.03 | 2.04 | 62 |
| 15 | 10/30/2025 | 15:43:59 | -70.02, 120.45 | 96.09 | 10/30/2025 | 15:43:50 | -70.04, 120.47 | 96.07 | 3.05 | 9 |
| 16 | 10/30/2025 | 16:34:35 | 69.46, -71.43 | 83.38 | 10/30/2025 | 16:33:25 | 69.48, -72.65 | 83.39 | 47.62 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 10/17/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 10/17/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8