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: 10/25/2025
| 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 | 10/26/2025 | 15:18:45 | -70.10, 126.63 | 97.34 | 10/26/2025 | 15:19:20 | -70.07, 126.67 | 97.37 | 3.26 | 35 |
| 2 | 10/26/2025 | 16:09:29 | 69.96, -65.85 | 82.53 | 10/26/2025 | 16:08:47 | 69.97, -65.84 | 82.54 | 1.27 | 42 |
| 3 | 10/29/2025 | 06:45:00 | 70.55, 74.39 | 84.00 | 10/29/2025 | 06:46:10 | 70.48, 75.51 | 83.93 | 42.28 | 70 |
| 4 | 10/29/2025 | 07:35:33 | -70.02,-117.45 | 96.53 | 10/29/2025 | 07:35:46 | -70.04,-117.49 | 96.51 | 2.94 | 13 |
| 5 | 10/29/2025 | 08:26:18 | 69.93, 49.99 | 83.40 | 10/29/2025 | 08:25:13 | 69.93, 50.00 | 83.40 | 0.51 | 65 |
| 6 | 10/31/2025 | 23:01:42 | 70.11,-169.12 | 84.43 | 10/31/2025 | 23:02:42 | 70.13,-169.10 | 84.45 | 2.43 | 60 |
| 7 | 10/31/2025 | 23:52:23 | -69.99, -1.62 | 95.68 | 10/31/2025 | 23:52:12 | -70.02, -1.62 | 95.65 | 3.49 | 11 |
| 8 | 11/01/2025 | 00:42:58 | 69.38, 166.58 | 83.73 | 11/01/2025 | 00:41:48 | 69.41, 165.19 | 83.75 | 54.62 | 70 |
| 9 | 11/03/2025 | 15:18:32 | 70.10, -53.32 | 85.27 | 11/03/2025 | 15:19:08 | 70.08, -53.27 | 85.24 | 2.98 | 36 |
| 10 | 11/03/2025 | 16:09:13 | -69.98, 114.19 | 94.85 | 11/03/2025 | 16:08:38 | -69.98, 114.22 | 94.86 | 0.84 | 35 |
| 11 | 11/06/2025 | 06:44:48 | -70.75,-105.85 | 93.29 | 11/06/2025 | 06:45:57 | -70.66,-104.16 | 93.37 | 62.74 | 69 |
| 12 | 11/06/2025 | 07:35:21 | 70.05, 62.56 | 86.03 | 11/06/2025 | 07:35:33 | 70.05, 62.59 | 86.03 | 1.28 | 12 |
| 13 | 11/06/2025 | 08:26:02 | -69.92,-129.92 | 94.10 | 11/06/2025 | 08:25:03 | -69.95,-129.92 | 94.07 | 3.40 | 59 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/25/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 10/25/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9