Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-8 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/30/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-8) | Time (LANDSAT-8) | Lat,Lon (LANDSAT-8) | SZA (LANDSAT-8 ) | Distance(km) | Time Diff (sec) |
| 1 | 10/01/2025 | 06:20:15 | -70.49, -99.33 | 106.31 | 10/01/2025 | 06:21:26 | -70.41, -98.43 | 106.40 | 34.47 | 71 |
| 2 | 10/01/2025 | 07:10:53 | 70.03, 68.68 | 73.25 | 10/01/2025 | 07:10:58 | 70.03, 68.67 | 73.25 | 0.52 | 5 |
| 3 | 10/01/2025 | 08:01:34 | -69.92,-123.82 | 106.86 | 10/01/2025 | 08:00:28 | -69.92,-123.86 | 106.86 | 1.41 | 66 |
| 4 | 10/03/2025 | 22:37:01 | -70.15, 16.98 | 105.62 | 10/03/2025 | 22:37:58 | -70.13, 17.05 | 105.64 | 3.36 | 57 |
| 5 | 10/03/2025 | 23:27:45 | 70.01,-175.50 | 74.26 | 10/03/2025 | 23:27:25 | 70.02,-175.45 | 74.27 | 2.53 | 20 |
| 6 | 10/04/2025 | 00:18:15 | -69.31, -7.16 | 106.44 | 10/04/2025 | 00:17:05 | -69.36, -8.72 | 106.38 | 61.81 | 70 |
| 7 | 10/06/2025 | 14:53:52 | -70.09, 132.86 | 104.66 | 10/06/2025 | 14:54:25 | -70.09, 132.88 | 104.66 | 0.78 | 33 |
| 8 | 10/06/2025 | 15:44:36 | 69.95, -59.62 | 75.22 | 10/06/2025 | 15:43:52 | 69.98, -59.63 | 75.25 | 3.22 | 44 |
| 9 | 10/09/2025 | 06:20:07 | 70.42, 80.82 | 76.69 | 10/09/2025 | 06:21:18 | 70.33, 81.50 | 76.60 | 27.24 | 71 |
| 10 | 10/09/2025 | 07:10:42 | -70.03,-111.27 | 103.69 | 10/09/2025 | 07:10:50 | -70.05,-111.26 | 103.67 | 2.25 | 8 |
| 11 | 10/09/2025 | 08:01:27 | 69.95, 56.16 | 76.25 | 10/09/2025 | 08:00:17 | 69.94, 56.22 | 76.24 | 2.57 | 70 |
| 12 | 10/11/2025 | 22:36:52 | 70.11,-162.93 | 77.40 | 10/11/2025 | 22:37:46 | 70.09,-162.95 | 77.37 | 2.95 | 54 |
| 13 | 10/11/2025 | 23:27:33 | -70.00, 4.57 | 102.71 | 10/11/2025 | 23:27:16 | -69.98, 4.53 | 102.73 | 2.05 | 17 |
| 14 | 10/12/2025 | 00:18:03 | 69.12, 173.16 | 76.42 | 10/12/2025 | 00:16:56 | 69.15, 171.05 | 76.45 | 83.52 | 67 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/30/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/30/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8