Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/8/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 09/08/2025 | 14:28:53 | 70.12, -40.94 | 64.60 | 09/08/2025 | 14:29:45 | 70.13, -40.88 | 64.60 | 2.72 | 52 |
| 2 | 09/08/2025 | 15:19:35 | -70.02, 126.52 | 115.50 | 09/08/2025 | 15:19:15 | -70.02, 126.59 | 115.50 | 2.47 | 20 |
| 3 | 09/08/2025 | 16:10:03 | 69.06, -64.78 | 63.54 | 09/08/2025 | 16:08:56 | 69.14, -66.95 | 63.67 | 86.69 | 67 |
| 4 | 09/11/2025 | 06:45:46 | 70.07, 74.90 | 65.56 | 09/11/2025 | 06:46:16 | 70.05, 74.88 | 65.53 | 3.21 | 30 |
| 5 | 09/11/2025 | 07:36:28 | -69.98,-117.64 | 114.53 | 09/11/2025 | 07:35:45 | -69.99,-117.57 | 114.52 | 2.71 | 43 |
| 6 | 09/13/2025 | 22:12:02 | -70.51, 22.68 | 112.98 | 09/13/2025 | 22:13:13 | -70.42, 23.66 | 113.10 | 37.78 | 71 |
| 7 | 09/13/2025 | 23:02:39 | 70.04,-169.26 | 66.54 | 09/13/2025 | 23:02:45 | 70.05,-169.24 | 66.55 | 1.34 | 6 |
| 8 | 09/13/2025 | 23:53:21 | -69.94, -1.80 | 113.55 | 09/13/2025 | 23:52:15 | -69.94, -1.76 | 113.55 | 1.86 | 66 |
| 9 | 09/16/2025 | 14:28:47 | -70.12, 139.08 | 112.37 | 09/16/2025 | 14:29:46 | -70.13, 139.12 | 112.36 | 1.80 | 59 |
| 10 | 09/16/2025 | 15:19:31 | 70.01, -53.44 | 67.54 | 09/16/2025 | 15:19:13 | 70.02, -53.39 | 67.55 | 2.33 | 18 |
| 11 | 09/16/2025 | 16:10:02 | -69.33, 114.87 | 113.14 | 09/16/2025 | 16:08:52 | -69.42, 113.42 | 113.03 | 57.66 | 70 |
| 12 | 09/19/2025 | 06:45:40 | -70.10,-105.11 | 111.36 | 09/19/2025 | 06:46:15 | -70.08,-105.06 | 111.38 | 2.38 | 35 |
| 13 | 09/19/2025 | 07:36:24 | 69.98, 62.37 | 68.55 | 09/19/2025 | 07:35:42 | 69.97, 62.42 | 68.53 | 2.64 | 42 |
| 14 | 09/21/2025 | 22:11:58 | 70.54,-157.34 | 70.13 | 09/21/2025 | 22:13:08 | 70.44,-156.29 | 70.01 | 40.65 | 70 |
| 15 | 09/21/2025 | 23:02:32 | -70.03, 10.78 | 110.39 | 09/21/2025 | 23:02:44 | -70.01, 10.72 | 110.41 | 3.33 | 12 |
| 16 | 09/21/2025 | 23:53:16 | 69.91, 178.26 | 69.52 | 09/21/2025 | 23:52:11 | 69.89, 178.20 | 69.49 | 3.40 | 65 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/8/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 09/08/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9