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: 8/5/2025
| 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 | 08/07/2025 | 14:28:59 | 70.10, -40.93 | 53.85 | 08/07/2025 | 14:29:32 | 70.10, -40.90 | 53.85 | 1.44 | 33 |
| 2 | 08/07/2025 | 15:19:41 | -69.98, 126.56 | 126.27 | 08/07/2025 | 15:19:02 | -69.99, 126.58 | 126.25 | 1.87 | 39 |
| 3 | 08/10/2025 | 05:55:20 | -70.69, -93.41 | 124.77 | 08/10/2025 | 05:56:29 | -70.60, -91.94 | 124.92 | 55.22 | 69 |
| 4 | 08/10/2025 | 06:45:54 | 70.08, 74.86 | 54.60 | 08/10/2025 | 06:46:04 | 70.06, 74.91 | 54.57 | 3.32 | 10 |
| 5 | 08/10/2025 | 07:36:36 | -69.96,-117.64 | 125.52 | 08/10/2025 | 07:35:34 | -69.96,-117.60 | 125.52 | 1.67 | 62 |
| 6 | 08/12/2025 | 22:12:04 | -70.10, 23.29 | 124.60 | 08/12/2025 | 22:13:09 | -70.11, 23.22 | 124.60 | 2.91 | 65 |
| 7 | 08/12/2025 | 23:02:48 | 70.02,-169.28 | 55.34 | 08/12/2025 | 23:02:36 | 70.00,-169.29 | 55.32 | 2.25 | 12 |
| 8 | 08/12/2025 | 23:53:23 | -69.53, -1.23 | 125.18 | 08/12/2025 | 23:52:12 | -69.57, -2.26 | 125.09 | 40.28 | 71 |
| 9 | 08/15/2025 | 14:28:58 | -70.09, 139.07 | 123.78 | 08/15/2025 | 14:29:39 | -70.09, 139.07 | 123.79 | 0.10 | 41 |
| 10 | 08/15/2025 | 15:19:41 | 69.97, -53.42 | 56.10 | 08/15/2025 | 15:19:06 | 69.98, -53.44 | 56.12 | 2.11 | 35 |
| 11 | 08/18/2025 | 05:55:22 | 70.80, 86.40 | 57.80 | 08/18/2025 | 05:56:30 | 70.71, 88.22 | 57.64 | 67.28 | 68 |
| 12 | 08/18/2025 | 06:45:52 | -70.04,-105.07 | 122.99 | 08/18/2025 | 06:46:10 | -70.06,-105.10 | 122.97 | 2.76 | 18 |
| 13 | 08/18/2025 | 07:36:36 | 69.96, 62.35 | 56.95 | 08/18/2025 | 07:35:37 | 69.95, 62.38 | 56.93 | 2.37 | 59 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/5/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/05/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9