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: 8/8/2025
| 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 | 08/10/2025 | 05:55:20 | -70.70, -93.42 | 124.77 | 08/10/2025 | 05:56:29 | -70.60, -91.95 | 124.93 | 55.38 | 69 |
| 2 | 08/10/2025 | 06:45:53 | 70.03, 74.93 | 54.55 | 08/10/2025 | 06:46:04 | 70.06, 74.91 | 54.57 | 2.95 | 11 |
| 3 | 08/10/2025 | 07:36:36 | -69.97,-117.65 | 125.51 | 08/10/2025 | 07:35:34 | -69.95,-117.61 | 125.53 | 2.46 | 62 |
| 4 | 08/12/2025 | 22:12:04 | -70.11, 23.28 | 124.59 | 08/12/2025 | 22:13:09 | -70.10, 23.21 | 124.60 | 2.85 | 65 |
| 5 | 08/12/2025 | 23:02:48 | 70.03,-169.28 | 55.34 | 08/12/2025 | 23:02:36 | 70.00,-169.30 | 55.31 | 3.03 | 12 |
| 6 | 08/12/2025 | 23:53:23 | -69.53, -1.24 | 125.17 | 08/12/2025 | 23:52:12 | -69.56, -2.27 | 125.10 | 40.26 | 71 |
| 7 | 08/15/2025 | 14:28:59 | -70.10, 139.06 | 123.78 | 08/15/2025 | 14:29:40 | -70.09, 139.06 | 123.80 | 1.65 | 41 |
| 8 | 08/15/2025 | 15:19:42 | 69.97, -53.43 | 56.10 | 08/15/2025 | 15:19:07 | 69.98, -53.45 | 56.11 | 1.33 | 35 |
| 9 | 08/18/2025 | 05:55:22 | 70.80, 86.40 | 57.81 | 08/18/2025 | 05:56:30 | 70.70, 88.21 | 57.64 | 67.29 | 68 |
| 10 | 08/18/2025 | 06:45:52 | -70.04,-105.08 | 122.98 | 08/18/2025 | 06:46:10 | -70.05,-105.12 | 122.98 | 1.52 | 18 |
| 11 | 08/18/2025 | 07:36:35 | 69.91, 62.43 | 56.90 | 08/18/2025 | 07:35:37 | 69.94, 62.37 | 56.93 | 3.26 | 58 |
| 12 | 08/20/2025 | 22:12:04 | 70.12,-156.75 | 57.97 | 08/20/2025 | 22:13:10 | 70.15,-156.72 | 57.98 | 3.13 | 66 |
| 13 | 08/20/2025 | 23:02:47 | -70.04, 10.69 | 122.11 | 08/20/2025 | 23:02:40 | -70.05, 10.76 | 122.11 | 2.84 | 7 |
| 14 | 08/20/2025 | 23:53:24 | 69.60, 178.66 | 57.44 | 08/20/2025 | 23:52:12 | 69.66, 177.87 | 57.54 | 31.59 | 72 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/8/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/08/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9