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: 7/27/2025
| 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 | 07/27/2025 | 22:12:03 | -70.12, 23.26 | 128.87 | 07/27/2025 | 22:12:58 | -70.10, 23.21 | 128.91 | 3.40 | 55 |
| 2 | 07/27/2025 | 23:02:47 | 70.02,-169.27 | 51.03 | 07/27/2025 | 23:02:25 | 69.99,-169.29 | 51.01 | 3.36 | 22 |
| 3 | 07/27/2025 | 23:53:15 | -69.17, -0.72 | 129.85 | 07/27/2025 | 23:52:07 | -69.22, -2.70 | 129.71 | 78.41 | 68 |
| 4 | 07/30/2025 | 14:28:58 | -70.09, 139.09 | 128.27 | 07/30/2025 | 14:29:28 | -70.06, 139.05 | 128.30 | 3.29 | 30 |
| 5 | 07/30/2025 | 15:19:42 | 69.99, -53.46 | 51.64 | 07/30/2025 | 15:18:54 | 70.01, -53.38 | 51.66 | 3.27 | 48 |
| 6 | 08/02/2025 | 05:55:14 | 70.33, 87.16 | 52.65 | 08/02/2025 | 05:56:25 | 70.27, 87.60 | 52.56 | 17.93 | 71 |
| 7 | 08/02/2025 | 06:45:53 | -70.06,-105.10 | 127.63 | 08/02/2025 | 06:45:57 | -70.06,-105.07 | 127.63 | 1.02 | 4 |
| 8 | 08/02/2025 | 07:36:36 | 69.91, 62.43 | 52.23 | 08/02/2025 | 07:35:24 | 69.95, 62.42 | 52.27 | 3.51 | 72 |
| 9 | 08/04/2025 | 22:12:04 | 70.10,-156.71 | 53.12 | 08/04/2025 | 22:12:56 | 70.08,-156.78 | 53.09 | 3.40 | 52 |
| 10 | 08/04/2025 | 23:02:47 | -70.03, 10.71 | 126.95 | 08/04/2025 | 23:02:25 | -70.04, 10.78 | 126.95 | 2.85 | 22 |
| 11 | 08/04/2025 | 23:53:14 | 69.04, 179.45 | 52.03 | 08/04/2025 | 23:52:07 | 69.09, 177.15 | 52.17 | 91.58 | 67 |
| 12 | 08/07/2025 | 14:28:59 | 70.09, -40.92 | 53.84 | 08/07/2025 | 14:29:24 | 70.09, -40.88 | 53.84 | 1.64 | 25 |
| 13 | 08/07/2025 | 15:19:41 | -69.96, 126.59 | 126.29 | 08/07/2025 | 15:18:55 | -69.94, 126.53 | 126.30 | 2.98 | 46 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/27/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/27/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9