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: 9/3/2025
| 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 | 09/03/2025 | 05:55:24 | 71.08, 85.94 | 63.62 | 09/03/2025 | 05:56:30 | 70.97, 88.61 | 63.44 | 97.35 | 66 |
| 2 | 09/03/2025 | 06:45:49 | -70.09,-105.13 | 117.41 | 09/03/2025 | 06:46:14 | -70.08,-105.07 | 117.42 | 2.34 | 25 |
| 3 | 09/03/2025 | 07:36:32 | 69.93, 62.41 | 62.45 | 09/03/2025 | 07:35:42 | 69.93, 62.36 | 62.45 | 1.98 | 50 |
| 4 | 09/05/2025 | 22:12:03 | 70.30,-156.99 | 63.78 | 09/05/2025 | 22:13:14 | 70.21,-156.64 | 63.68 | 16.06 | 71 |
| 5 | 09/05/2025 | 23:02:42 | -70.03, 10.73 | 116.48 | 09/05/2025 | 23:02:45 | -70.05, 10.75 | 116.47 | 1.62 | 3 |
| 6 | 09/05/2025 | 23:53:25 | 69.88, 178.27 | 63.38 | 09/05/2025 | 23:52:13 | 69.89, 178.18 | 63.39 | 3.67 | 72 |
| 7 | 09/08/2025 | 14:28:52 | 70.09, -40.90 | 64.57 | 09/08/2025 | 14:29:45 | 70.07, -40.96 | 64.55 | 3.17 | 53 |
| 8 | 09/08/2025 | 15:19:34 | -69.99, 126.57 | 115.53 | 09/08/2025 | 15:19:14 | -70.02, 126.59 | 115.50 | 3.09 | 20 |
| 9 | 09/08/2025 | 16:10:02 | 69.04, -64.74 | 63.52 | 09/08/2025 | 16:08:55 | 69.14, -66.95 | 63.66 | 88.41 | 67 |
| 10 | 09/11/2025 | 06:45:45 | 70.06, 74.92 | 65.55 | 09/11/2025 | 06:46:14 | 70.05, 74.90 | 65.54 | 1.37 | 29 |
| 11 | 09/11/2025 | 07:36:27 | -69.96,-117.60 | 114.55 | 09/11/2025 | 07:35:44 | -69.95,-117.62 | 114.56 | 1.68 | 43 |
| 12 | 09/13/2025 | 22:12:00 | -70.46, 22.78 | 113.04 | 09/13/2025 | 22:13:11 | -70.37, 23.60 | 113.15 | 32.10 | 71 |
| 13 | 09/13/2025 | 23:02:38 | 70.04,-169.26 | 66.54 | 09/13/2025 | 23:02:42 | 70.04,-169.23 | 66.55 | 1.51 | 4 |
| 14 | 09/13/2025 | 23:53:20 | -69.94, -1.80 | 113.55 | 09/13/2025 | 23:52:12 | -69.94, -1.74 | 113.55 | 1.98 | 68 |
| 15 | 09/16/2025 | 14:28:47 | -70.13, 139.06 | 112.35 | 09/16/2025 | 14:29:43 | -70.11, 139.11 | 112.38 | 3.18 | 56 |
| 16 | 09/16/2025 | 15:19:30 | 69.97, -53.39 | 67.50 | 09/16/2025 | 15:19:10 | 69.99, -53.41 | 67.52 | 2.18 | 20 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/3/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 09/03/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9