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: 7/30/2025
| 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 | 07/30/2025 | 14:28:58 | -70.08, 139.10 | 128.28 | 07/30/2025 | 14:29:28 | -70.07, 139.06 | 128.30 | 1.95 | 30 |
| 2 | 07/30/2025 | 15:19:42 | 69.98, -53.44 | 51.63 | 07/30/2025 | 15:18:55 | 69.96, -53.45 | 51.62 | 1.75 | 47 |
| 3 | 08/02/2025 | 05:55:13 | 70.32, 87.18 | 52.64 | 08/02/2025 | 05:56:25 | 70.23, 87.54 | 52.52 | 16.92 | 72 |
| 4 | 08/02/2025 | 06:45:52 | -70.05,-105.08 | 127.64 | 08/02/2025 | 06:45:56 | -70.07,-105.06 | 127.63 | 2.37 | 4 |
| 5 | 08/02/2025 | 07:36:36 | 69.96, 62.37 | 52.28 | 08/02/2025 | 07:35:23 | 69.96, 62.43 | 52.28 | 2.53 | 73 |
| 6 | 08/04/2025 | 22:12:04 | 70.09,-156.70 | 53.10 | 08/04/2025 | 22:12:56 | 70.09,-156.77 | 53.10 | 2.77 | 52 |
| 7 | 08/04/2025 | 23:02:47 | -70.02, 10.72 | 126.96 | 08/04/2025 | 23:02:26 | -69.99, 10.72 | 126.99 | 3.56 | 21 |
| 8 | 08/04/2025 | 23:53:14 | 69.03, 179.47 | 52.02 | 08/04/2025 | 23:52:07 | 69.10, 177.16 | 52.18 | 91.83 | 67 |
| 9 | 08/07/2025 | 14:28:59 | 70.08, -40.90 | 53.83 | 08/07/2025 | 14:29:25 | 70.05, -40.94 | 53.80 | 3.17 | 26 |
| 10 | 08/07/2025 | 15:19:41 | -69.95, 126.60 | 126.30 | 08/07/2025 | 15:18:55 | -69.95, 126.55 | 126.29 | 2.09 | 46 |
| 11 | 08/10/2025 | 05:55:13 | -70.30, -92.79 | 125.19 | 08/10/2025 | 05:56:25 | -70.21, -92.46 | 125.29 | 15.52 | 72 |
| 12 | 08/10/2025 | 06:45:53 | 70.01, 74.96 | 54.53 | 08/10/2025 | 06:45:53 | 70.04, 74.94 | 54.56 | 3.31 | 0 |
| 13 | 08/10/2025 | 07:36:36 | -69.94,-117.61 | 125.55 | 08/10/2025 | 07:35:23 | -69.94,-117.57 | 125.53 | 1.53 | 73 |
| 14 | 08/12/2025 | 22:12:04 | -70.13, 23.24 | 124.56 | 08/12/2025 | 22:12:53 | -70.13, 23.31 | 124.57 | 2.83 | 49 |
| 15 | 08/12/2025 | 23:02:47 | 70.01,-169.26 | 55.32 | 08/12/2025 | 23:02:20 | 70.02,-169.21 | 55.33 | 2.00 | 27 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/30/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/30/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9