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: 9/5/2025
| 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 | 09/05/2025 | 22:12:03 | 70.30,-156.99 | 63.78 | 09/05/2025 | 22:13:14 | 70.23,-156.63 | 63.70 | 15.80 | 71 |
| 2 | 09/05/2025 | 23:02:42 | -70.04, 10.72 | 116.48 | 09/05/2025 | 23:02:45 | -70.05, 10.76 | 116.46 | 2.41 | 3 |
| 3 | 09/05/2025 | 23:53:26 | 69.93, 178.19 | 63.43 | 09/05/2025 | 23:52:13 | 69.90, 178.19 | 63.40 | 3.49 | 73 |
| 4 | 09/08/2025 | 14:28:53 | 70.09, -40.90 | 64.57 | 09/08/2025 | 14:29:46 | 70.11, -40.92 | 64.58 | 2.33 | 53 |
| 5 | 09/08/2025 | 15:19:35 | -69.99, 126.57 | 115.53 | 09/08/2025 | 15:19:16 | -69.99, 126.56 | 115.52 | 0.90 | 19 |
| 6 | 09/08/2025 | 16:10:04 | 69.09, -64.81 | 63.56 | 09/08/2025 | 16:08:57 | 69.12, -66.98 | 63.64 | 86.26 | 67 |
| 7 | 09/11/2025 | 06:45:45 | 70.05, 74.94 | 65.53 | 09/11/2025 | 06:46:15 | 70.07, 74.91 | 65.55 | 2.55 | 30 |
| 8 | 09/11/2025 | 07:36:27 | -69.95,-117.59 | 114.56 | 09/11/2025 | 07:35:45 | -69.96,-117.61 | 114.55 | 1.22 | 42 |
| 9 | 09/13/2025 | 22:12:02 | -70.54, 22.64 | 112.96 | 09/13/2025 | 22:13:12 | -70.43, 23.67 | 113.09 | 40.39 | 70 |
| 10 | 09/13/2025 | 23:02:38 | 70.02,-169.23 | 66.52 | 09/13/2025 | 23:02:44 | 70.05,-169.23 | 66.55 | 3.63 | 6 |
| 11 | 09/13/2025 | 23:53:20 | -69.92, -1.77 | 113.57 | 09/13/2025 | 23:52:14 | -69.94, -1.75 | 113.55 | 2.48 | 66 |
| 12 | 09/16/2025 | 14:28:47 | -70.10, 139.11 | 112.39 | 09/16/2025 | 14:29:46 | -70.11, 139.09 | 112.38 | 1.09 | 59 |
| 13 | 09/16/2025 | 15:19:31 | 69.99, -53.42 | 67.52 | 09/16/2025 | 15:19:13 | 70.00, -53.42 | 67.53 | 0.45 | 18 |
| 14 | 09/16/2025 | 16:10:02 | -69.31, 114.89 | 113.16 | 09/16/2025 | 16:08:53 | -69.34, 113.32 | 113.11 | 61.94 | 69 |
| 15 | 09/19/2025 | 06:45:40 | -70.09,-105.09 | 111.37 | 09/19/2025 | 06:46:14 | -70.08,-105.06 | 111.38 | 1.46 | 34 |
| 16 | 09/19/2025 | 07:36:24 | 69.98, 62.38 | 68.54 | 09/19/2025 | 07:35:41 | 69.97, 62.43 | 68.53 | 2.08 | 43 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/5/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 09/05/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9