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: 8/29/2025
| 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 | 08/31/2025 | 14:28:55 | -70.08, 139.10 | 118.39 | 08/31/2025 | 14:29:41 | -70.07, 139.04 | 118.41 | 2.76 | 46 |
| 2 | 08/31/2025 | 15:19:39 | 69.99, -53.45 | 61.53 | 08/31/2025 | 15:19:08 | 69.97, -53.45 | 61.51 | 2.35 | 31 |
| 3 | 09/03/2025 | 05:55:21 | 70.91, 86.23 | 63.44 | 09/03/2025 | 05:56:28 | 70.78, 88.35 | 63.25 | 78.53 | 67 |
| 4 | 09/03/2025 | 06:45:49 | -70.07,-105.10 | 117.43 | 09/03/2025 | 06:46:09 | -70.06,-105.08 | 117.44 | 1.03 | 20 |
| 5 | 09/03/2025 | 07:36:33 | 69.97, 62.35 | 62.49 | 09/03/2025 | 07:35:36 | 69.96, 62.42 | 62.48 | 3.01 | 57 |
| 6 | 09/05/2025 | 22:11:59 | 70.11,-156.71 | 63.59 | 09/05/2025 | 22:13:06 | 70.14,-156.71 | 63.61 | 2.89 | 67 |
| 7 | 09/05/2025 | 23:02:41 | -70.01, 10.77 | 116.51 | 09/05/2025 | 23:02:36 | -70.03, 10.77 | 116.49 | 2.64 | 5 |
| 8 | 09/05/2025 | 23:53:19 | 69.59, 178.69 | 63.08 | 09/05/2025 | 23:52:08 | 69.65, 177.88 | 63.16 | 32.08 | 71 |
| 9 | 09/08/2025 | 14:28:52 | 70.06, -40.85 | 64.54 | 09/08/2025 | 14:29:34 | 70.08, -40.90 | 64.55 | 2.80 | 42 |
| 10 | 09/08/2025 | 15:19:34 | -69.95, 126.63 | 115.57 | 09/08/2025 | 15:19:04 | -69.97, 126.58 | 115.55 | 2.77 | 30 |
| 11 | 09/11/2025 | 05:55:15 | -70.84, -93.63 | 113.66 | 09/11/2025 | 05:56:23 | -70.76, -91.65 | 113.79 | 73.07 | 68 |
| 12 | 09/11/2025 | 06:45:46 | 70.07, 74.91 | 65.55 | 09/11/2025 | 06:46:01 | 70.05, 74.94 | 65.53 | 2.50 | 15 |
| 13 | 09/11/2025 | 07:36:28 | -69.96,-117.61 | 114.55 | 09/11/2025 | 07:35:31 | -69.94,-117.57 | 114.57 | 2.57 | 57 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/29/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/29/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9