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: 8/24/2025
| 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 | 08/26/2025 | 05:55:23 | -70.93, -93.80 | 119.39 | 08/26/2025 | 05:56:30 | -70.87, -91.54 | 119.52 | 82.72 | 67 |
| 2 | 08/26/2025 | 06:45:52 | 70.06, 74.90 | 59.71 | 08/26/2025 | 06:46:10 | 70.06, 74.91 | 59.71 | 0.48 | 18 |
| 3 | 08/26/2025 | 07:36:34 | -69.94,-117.61 | 120.40 | 08/26/2025 | 07:35:40 | -69.94,-117.62 | 120.39 | 0.67 | 54 |
| 4 | 08/28/2025 | 22:12:01 | -70.11, 23.28 | 119.31 | 08/28/2025 | 22:13:12 | -70.10, 23.21 | 119.33 | 2.86 | 71 |
| 5 | 08/28/2025 | 23:02:45 | 70.02,-169.27 | 60.61 | 08/28/2025 | 23:02:39 | 70.00,-169.29 | 60.59 | 2.42 | 6 |
| 6 | 08/28/2025 | 23:53:24 | -69.75, -1.55 | 119.66 | 08/28/2025 | 23:52:11 | -69.78, -1.97 | 119.62 | 16.59 | 73 |
| 7 | 08/31/2025 | 14:28:55 | -70.08, 139.10 | 118.39 | 08/31/2025 | 14:29:41 | -70.09, 139.07 | 118.39 | 1.22 | 46 |
| 8 | 08/31/2025 | 15:19:39 | 69.99, -53.45 | 61.54 | 08/31/2025 | 15:19:08 | 69.98, -53.43 | 61.53 | 1.54 | 31 |
| 9 | 09/03/2025 | 05:55:21 | 70.91, 86.24 | 63.44 | 09/03/2025 | 05:56:28 | 70.82, 88.41 | 63.29 | 79.70 | 67 |
| 10 | 09/03/2025 | 06:45:49 | -70.06,-105.09 | 117.44 | 09/03/2025 | 06:46:10 | -70.05,-105.09 | 117.45 | 0.63 | 21 |
| 11 | 09/03/2025 | 07:36:33 | 69.97, 62.36 | 62.48 | 09/03/2025 | 07:35:37 | 69.94, 62.40 | 62.46 | 3.20 | 56 |
| 12 | 09/05/2025 | 22:12:00 | 70.10,-156.69 | 63.58 | 09/05/2025 | 22:13:09 | 70.11,-156.76 | 63.58 | 2.59 | 69 |
| 13 | 09/05/2025 | 23:02:42 | -69.99, 10.80 | 116.53 | 09/05/2025 | 23:02:39 | -70.00, 10.72 | 116.51 | 3.24 | 3 |
| 14 | 09/05/2025 | 23:53:21 | 69.63, 178.64 | 63.12 | 09/05/2025 | 23:52:09 | 69.72, 177.98 | 63.23 | 27.28 | 72 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/24/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/24/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9