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: 5/17/2025
| 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 | 05/19/2025 | 14:28:22 | 70.15, -40.85 | 50.17 | 05/19/2025 | 14:29:03 | 70.17, -40.92 | 50.19 | 3.45 | 41 |
| 2 | 05/19/2025 | 15:19:04 | -70.07, 126.59 | 129.92 | 05/19/2025 | 15:18:33 | -70.06, 126.55 | 129.94 | 2.28 | 31 |
| 3 | 05/22/2025 | 05:54:46 | -70.81, -93.45 | 129.69 | 05/22/2025 | 05:55:55 | -70.75, -91.83 | 129.79 | 59.48 | 69 |
| 4 | 05/22/2025 | 06:45:20 | 70.16, 74.90 | 49.63 | 05/22/2025 | 06:45:31 | 70.15, 74.94 | 49.63 | 1.38 | 11 |
| 5 | 05/22/2025 | 07:36:01 | -70.03,-117.58 | 130.51 | 05/22/2025 | 07:35:01 | -70.04,-117.59 | 130.50 | 1.71 | 60 |
| 6 | 05/24/2025 | 22:11:31 | -70.19, 23.30 | 130.83 | 05/24/2025 | 22:12:31 | -70.21, 23.26 | 130.81 | 2.63 | 60 |
| 7 | 05/24/2025 | 23:02:16 | 70.12,-169.28 | 49.09 | 05/24/2025 | 23:01:58 | 70.11,-169.25 | 49.08 | 1.49 | 18 |
| 8 | 05/24/2025 | 23:52:47 | -69.46, -0.98 | 131.60 | 05/24/2025 | 23:51:37 | -69.50, -2.45 | 131.52 | 57.70 | 70 |
| 9 | 05/27/2025 | 14:28:28 | -70.16, 139.11 | 131.32 | 05/27/2025 | 14:28:59 | -70.14, 139.04 | 131.34 | 3.42 | 31 |
| 10 | 05/27/2025 | 15:19:13 | 70.08, -53.46 | 48.60 | 05/27/2025 | 15:18:25 | 70.09, -53.40 | 48.60 | 2.62 | 48 |
| 11 | 05/30/2025 | 05:54:44 | 70.26, 87.39 | 48.38 | 05/30/2025 | 05:55:55 | 70.26, 87.46 | 48.37 | 2.38 | 71 |
| 12 | 05/30/2025 | 06:45:25 | -70.13,-105.08 | 131.76 | 05/30/2025 | 06:45:25 | -70.15,-105.06 | 131.74 | 2.37 | 0 |
| 13 | 05/30/2025 | 07:36:07 | 69.89, 62.58 | 47.99 | 05/30/2025 | 07:34:54 | 69.93, 62.27 | 48.04 | 12.62 | 73 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/17/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/17/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9