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: 8/2/2025
| 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 | 08/04/2025 | 22:12:05 | 70.12,-156.74 | 53.14 | 08/04/2025 | 22:13:01 | 70.12,-156.76 | 53.12 | 0.70 | 56 |
| 2 | 08/04/2025 | 23:02:47 | -70.00, 10.75 | 126.98 | 08/04/2025 | 23:02:31 | -70.01, 10.72 | 126.98 | 1.18 | 16 |
| 3 | 08/04/2025 | 23:53:18 | 69.22, 179.20 | 52.22 | 08/04/2025 | 23:52:10 | 69.24, 177.32 | 52.31 | 74.09 | 68 |
| 4 | 08/07/2025 | 14:28:59 | 70.11, -40.95 | 53.86 | 08/07/2025 | 14:29:32 | 70.09, -40.92 | 53.83 | 2.26 | 33 |
| 5 | 08/07/2025 | 15:19:41 | -69.99, 126.55 | 126.26 | 08/07/2025 | 15:19:02 | -69.99, 126.56 | 126.26 | 0.61 | 39 |
| 6 | 08/10/2025 | 05:55:20 | -70.70, -93.43 | 124.76 | 08/10/2025 | 05:56:29 | -70.59, -91.96 | 124.93 | 55.87 | 69 |
| 7 | 08/10/2025 | 06:45:53 | 70.05, 74.91 | 54.56 | 08/10/2025 | 06:46:04 | 70.05, 74.89 | 54.56 | 0.78 | 11 |
| 8 | 08/10/2025 | 07:36:35 | -69.92,-117.58 | 125.56 | 08/10/2025 | 07:35:34 | -69.94,-117.62 | 125.53 | 2.79 | 61 |
| 9 | 08/12/2025 | 22:12:04 | -70.12, 23.26 | 124.58 | 08/12/2025 | 22:13:08 | -70.15, 23.27 | 124.56 | 3.14 | 64 |
| 10 | 08/12/2025 | 23:02:48 | 70.04,-169.31 | 55.36 | 08/12/2025 | 23:02:35 | 70.04,-169.24 | 55.35 | 2.81 | 13 |
| 11 | 08/12/2025 | 23:53:23 | -69.55, -1.26 | 125.16 | 08/12/2025 | 23:52:11 | -69.61, -2.21 | 125.06 | 37.56 | 72 |
| 12 | 08/15/2025 | 14:28:59 | -70.12, 139.03 | 123.75 | 08/15/2025 | 14:29:39 | -70.12, 139.11 | 123.76 | 3.00 | 40 |
| 13 | 08/15/2025 | 15:19:42 | 69.99, -53.47 | 56.13 | 08/15/2025 | 15:19:06 | 70.01, -53.41 | 56.14 | 2.70 | 36 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/2/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/02/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9