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: 4/17/2025
| 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 | 04/17/2025 | 14:28:07 | 70.49, -41.28 | 59.74 | 04/17/2025 | 14:29:18 | 70.40, -40.60 | 59.62 | 27.34 | 71 |
| 2 | 04/17/2025 | 15:18:44 | -70.11, 126.63 | 120.67 | 04/17/2025 | 15:18:51 | -70.12, 126.63 | 120.67 | 0.43 | 7 |
| 3 | 04/17/2025 | 16:09:28 | 70.03, -65.93 | 59.24 | 04/17/2025 | 16:08:18 | 70.01, -65.87 | 59.22 | 2.85 | 70 |
| 4 | 04/20/2025 | 06:44:52 | 70.21, 74.95 | 58.52 | 04/20/2025 | 06:45:48 | 70.22, 75.03 | 58.52 | 2.77 | 56 |
| 5 | 04/20/2025 | 07:35:34 | -70.10,-117.55 | 121.62 | 04/20/2025 | 07:35:18 | -70.11,-117.50 | 121.61 | 2.22 | 16 |
| 6 | 04/20/2025 | 08:26:05 | 69.32, 50.90 | 57.58 | 04/20/2025 | 08:24:56 | 69.39, 49.16 | 57.69 | 68.47 | 69 |
| 7 | 04/22/2025 | 23:01:41 | 70.16,-169.17 | 57.56 | 04/22/2025 | 23:02:15 | 70.16,-169.17 | 57.55 | 0.35 | 34 |
| 8 | 04/22/2025 | 23:52:23 | -70.04, -1.67 | 122.58 | 04/22/2025 | 23:51:45 | -70.05, -1.69 | 122.57 | 1.72 | 38 |
| 9 | 04/25/2025 | 14:27:57 | -70.77, 138.34 | 122.68 | 04/25/2025 | 14:29:06 | -70.66, 139.80 | 122.83 | 55.01 | 69 |
| 10 | 04/25/2025 | 15:18:29 | 70.11, -53.31 | 56.63 | 04/25/2025 | 15:18:40 | 70.11, -53.36 | 56.62 | 1.86 | 11 |
| 11 | 04/25/2025 | 16:09:11 | -69.99, 114.19 | 123.51 | 04/25/2025 | 16:08:10 | -70.00, 114.13 | 123.50 | 2.60 | 61 |
| 12 | 04/28/2025 | 06:44:35 | -70.21,-104.98 | 124.12 | 04/28/2025 | 06:45:37 | -70.24,-104.92 | 124.10 | 3.34 | 62 |
| 13 | 04/28/2025 | 07:35:18 | 70.08, 62.53 | 55.74 | 04/28/2025 | 07:35:05 | 70.07, 62.48 | 55.73 | 2.86 | 13 |
| 14 | 04/28/2025 | 08:25:52 | -69.54,-129.34 | 124.83 | 04/28/2025 | 08:24:41 | -69.63,-130.49 | 124.71 | 45.65 | 71 |
| 15 | 04/30/2025 | 23:01:23 | -70.14, 10.92 | 125.02 | 04/30/2025 | 23:02:02 | -70.15, 10.85 | 125.01 | 2.93 | 39 |
| 16 | 04/30/2025 | 23:52:07 | 70.07, 178.35 | 54.90 | 04/30/2025 | 23:51:28 | 70.09, 178.40 | 54.92 | 2.92 | 39 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/17/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/17/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9