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: 5/20/2025
| 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 | 05/22/2025 | 05:54:47 | -70.87, -93.55 | 129.62 | 05/22/2025 | 05:55:55 | -70.76, -91.82 | 129.78 | 64.54 | 68 |
| 2 | 05/22/2025 | 06:45:20 | 70.16, 74.89 | 49.64 | 05/22/2025 | 06:45:31 | 70.17, 74.96 | 49.64 | 2.72 | 11 |
| 3 | 05/22/2025 | 07:36:01 | -70.04,-117.59 | 130.50 | 05/22/2025 | 07:35:01 | -70.05,-117.58 | 130.48 | 2.04 | 60 |
| 4 | 05/24/2025 | 22:11:32 | -70.21, 23.28 | 130.82 | 05/24/2025 | 22:12:33 | -70.19, 23.23 | 130.83 | 2.40 | 61 |
| 5 | 05/24/2025 | 23:02:16 | 70.07,-169.21 | 49.04 | 05/24/2025 | 23:02:00 | 70.09,-169.27 | 49.07 | 3.47 | 16 |
| 6 | 05/24/2025 | 23:52:48 | -69.47, -0.99 | 131.59 | 05/24/2025 | 23:51:38 | -69.54, -2.41 | 131.48 | 55.56 | 70 |
| 7 | 05/27/2025 | 14:28:28 | -70.17, 139.09 | 131.31 | 05/27/2025 | 14:29:00 | -70.15, 139.05 | 131.33 | 2.69 | 32 |
| 8 | 05/27/2025 | 15:19:12 | 70.04, -53.40 | 48.55 | 05/27/2025 | 15:18:27 | 70.05, -53.46 | 48.57 | 2.50 | 45 |
| 9 | 05/30/2025 | 05:54:45 | 70.33, 87.29 | 48.45 | 05/30/2025 | 05:55:56 | 70.31, 87.53 | 48.42 | 8.87 | 71 |
| 10 | 05/30/2025 | 06:45:25 | -70.15,-105.11 | 131.75 | 05/30/2025 | 06:45:27 | -70.15,-105.08 | 131.75 | 1.13 | 2 |
| 11 | 05/30/2025 | 07:36:08 | 69.96, 62.48 | 48.06 | 05/30/2025 | 07:34:55 | 69.98, 62.34 | 48.09 | 6.30 | 73 |
| 12 | 06/01/2025 | 22:11:40 | 70.20,-156.75 | 47.95 | 06/01/2025 | 22:12:25 | 70.17,-156.79 | 47.92 | 3.33 | 45 |
| 13 | 06/01/2025 | 23:02:21 | -70.07, 10.77 | 132.19 | 06/01/2025 | 23:01:55 | -70.07, 10.69 | 132.19 | 2.99 | 26 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/20/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/20/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9