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: 11/7/2025
| 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 | 11/08/2025 | 23:01:42 | -70.25, 10.68 | 93.01 | 11/08/2025 | 23:02:53 | -70.21, 10.96 | 93.05 | 11.62 | 71 |
| 2 | 11/08/2025 | 23:52:24 | 70.00, 178.36 | 86.76 | 11/08/2025 | 23:52:22 | 69.99, 178.30 | 86.75 | 2.86 | 2 |
| 3 | 11/09/2025 | 00:43:05 | -69.88, -14.13 | 93.36 | 11/09/2025 | 00:41:52 | -69.88, -14.22 | 93.36 | 3.59 | 73 |
| 4 | 11/11/2025 | 15:18:41 | -70.11, 126.64 | 92.40 | 11/11/2025 | 15:19:25 | -70.09, 126.67 | 92.42 | 2.47 | 44 |
| 5 | 11/11/2025 | 16:09:25 | 69.98, -65.85 | 87.48 | 11/11/2025 | 16:08:52 | 69.98, -65.84 | 87.49 | 0.87 | 33 |
| 6 | 11/14/2025 | 06:45:09 | 70.65, 74.22 | 88.85 | 11/14/2025 | 06:46:18 | 70.54, 75.58 | 88.75 | 51.55 | 69 |
| 7 | 11/14/2025 | 07:35:40 | -70.04,-117.50 | 91.76 | 11/14/2025 | 07:35:54 | -70.06,-117.50 | 91.74 | 2.29 | 14 |
| 8 | 11/14/2025 | 08:26:25 | 69.96, 49.92 | 88.18 | 11/14/2025 | 08:25:21 | 69.94, 49.99 | 88.16 | 3.09 | 64 |
| 9 | 11/16/2025 | 23:01:59 | 70.12,-169.19 | 88.99 | 11/16/2025 | 23:02:54 | 70.09,-169.20 | 88.96 | 2.90 | 55 |
| 10 | 11/16/2025 | 23:52:40 | -69.97, -1.65 | 91.15 | 11/16/2025 | 23:52:24 | -69.99, -1.71 | 91.13 | 2.95 | 16 |
| 11 | 11/17/2025 | 00:43:11 | 69.16, 166.84 | 88.05 | 11/17/2025 | 00:42:03 | 69.21, 164.88 | 88.10 | 77.53 | 68 |
| 12 | 11/19/2025 | 15:18:59 | 70.08, -53.37 | 89.58 | 11/19/2025 | 15:19:23 | 70.05, -53.37 | 89.55 | 2.61 | 24 |
| 13 | 11/19/2025 | 16:09:41 | -69.98, 114.10 | 90.52 | 11/19/2025 | 16:08:53 | -69.95, 114.12 | 90.54 | 2.69 | 48 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/7/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/07/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9