Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-20 and LANDSAT-8 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/21/2025
| Index | Date (NOAA-20) | Time (NOAA-20) | Lat,Lon (NOAA-20) | SZA (NOAA-20 ) | Date (LANDSAT-8) | Time (LANDSAT-8) | Lat,Lon (LANDSAT-8) | SZA (LANDSAT-8 ) | Distance(km) | Time Diff (sec) |
| 1 | 04/22/2025 | 23:51:00 | 70.06, 178.23 | 57.45 | 04/22/2025 | 23:51:22 | 70.04, 178.30 | 57.43 | 3.67 | 22 |
| 2 | 04/23/2025 | 00:41:41 | -69.91, -14.24 | 122.71 | 04/23/2025 | 00:40:52 | -69.92, -14.23 | 122.70 | 0.71 | 49 |
| 3 | 04/25/2025 | 15:17:13 | -70.10, 126.62 | 123.38 | 04/25/2025 | 15:18:21 | -70.07, 126.60 | 123.42 | 3.23 | 68 |
| 4 | 04/25/2025 | 16:07:57 | 69.99, -65.90 | 56.50 | 04/25/2025 | 16:07:48 | 69.96, -65.91 | 56.47 | 2.40 | 9 |
| 5 | 04/25/2025 | 16:58:34 | -69.62, 101.95 | 123.89 | 04/25/2025 | 16:57:21 | -69.68, 101.34 | 123.81 | 24.61 | 73 |
| 6 | 04/28/2025 | 07:34:10 | -70.03,-117.52 | 124.31 | 04/28/2025 | 07:34:46 | -70.02,-117.58 | 124.32 | 2.84 | 36 |
| 7 | 04/28/2025 | 08:24:54 | 69.92, 49.95 | 55.58 | 04/28/2025 | 08:24:13 | 69.91, 49.91 | 55.56 | 2.41 | 41 |
| 8 | 04/30/2025 | 23:00:27 | 70.19,-169.32 | 55.05 | 04/30/2025 | 23:01:39 | 70.15,-169.13 | 54.99 | 8.14 | 72 |
| 9 | 04/30/2025 | 23:51:07 | -69.97, -1.67 | 125.19 | 04/30/2025 | 23:51:10 | -69.98, -1.74 | 125.18 | 2.68 | 3 |
| 10 | 05/01/2025 | 00:41:50 | 69.82, 165.87 | 54.64 | 05/01/2025 | 00:40:37 | 69.87, 165.75 | 54.70 | 7.15 | 73 |
| 11 | 05/03/2025 | 15:17:22 | 70.09, -53.41 | 54.15 | 05/03/2025 | 15:18:02 | 70.07, -53.34 | 54.12 | 3.35 | 40 |
| 12 | 05/03/2025 | 16:08:04 | -69.98, 114.08 | 125.98 | 05/03/2025 | 16:07:32 | -69.96, 114.14 | 126.00 | 2.67 | 32 |
Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/21/2025
Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 04/21/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-8