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: 11/24/2025
| 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 | 11/24/2025 | 23:02:13 | -70.06, 10.85 | 89.31 | 11/24/2025 | 23:02:53 | -70.07, 10.78 | 89.30 | 3.31 | 40 |
| 2 | 11/24/2025 | 23:52:58 | 69.99, 178.25 | 90.64 | 11/24/2025 | 23:52:20 | 69.98, 178.28 | 90.62 | 2.22 | 38 |
| 3 | 11/27/2025 | 14:28:39 | 70.56, -41.50 | 91.70 | 11/27/2025 | 14:29:49 | 70.42, -40.48 | 91.55 | 41.04 | 70 |
| 4 | 11/27/2025 | 15:19:12 | -70.03, 126.64 | 88.83 | 11/27/2025 | 15:19:23 | -70.04, 126.60 | 88.83 | 1.43 | 11 |
| 5 | 11/27/2025 | 16:09:56 | 69.92, -65.89 | 91.07 | 11/27/2025 | 16:08:50 | 69.93, -65.90 | 91.07 | 1.08 | 66 |
| 6 | 11/30/2025 | 06:45:30 | 70.13, 74.93 | 91.72 | 11/30/2025 | 06:46:23 | 70.14, 74.98 | 91.72 | 2.20 | 53 |
| 7 | 11/30/2025 | 07:36:12 | -70.02,-117.59 | 88.40 | 11/30/2025 | 07:35:53 | -70.03,-117.54 | 88.39 | 2.10 | 19 |
| 8 | 11/30/2025 | 08:26:41 | 69.12, 51.03 | 90.71 | 11/30/2025 | 08:25:34 | 69.15, 48.91 | 90.75 | 83.95 | 67 |
| 9 | 12/02/2025 | 23:02:29 | 70.08,-169.24 | 92.07 | 12/02/2025 | 23:02:53 | 70.10,-169.19 | 92.09 | 2.76 | 24 |
| 10 | 12/02/2025 | 23:53:11 | -69.96, -1.74 | 88.05 | 12/02/2025 | 23:52:24 | -69.94, -1.79 | 88.07 | 3.06 | 47 |
| 11 | 12/05/2025 | 14:28:44 | -70.12, 139.14 | 87.54 | 12/05/2025 | 14:29:56 | -70.14, 139.11 | 87.52 | 2.99 | 72 |
| 12 | 12/05/2025 | 15:19:28 | 70.03, -53.41 | 92.38 | 12/05/2025 | 15:19:23 | 70.03, -53.40 | 92.38 | 0.40 | 5 |
| 13 | 12/05/2025 | 16:10:08 | -69.80, 114.25 | 87.86 | 12/05/2025 | 16:08:54 | -69.87, 114.01 | 87.78 | 12.15 | 74 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/24/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/24/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9