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: 9/22/2025
| 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 | 09/23/2025 | 06:20:20 | 70.28, 80.96 | 70.38 | 09/23/2025 | 06:21:30 | 70.25, 81.33 | 70.34 | 14.12 | 70 |
| 2 | 09/23/2025 | 07:10:59 | -70.05,-111.36 | 109.85 | 09/23/2025 | 07:11:02 | -70.02,-111.36 | 109.87 | 2.43 | 3 |
| 3 | 09/23/2025 | 08:01:42 | 69.86, 56.22 | 69.98 | 09/23/2025 | 08:00:30 | 69.87, 56.07 | 69.99 | 5.95 | 72 |
| 4 | 09/25/2025 | 22:37:10 | 70.11,-163.00 | 71.25 | 09/25/2025 | 22:38:02 | 70.09,-163.02 | 71.22 | 2.55 | 52 |
| 5 | 09/25/2025 | 23:27:51 | -69.98, 4.51 | 108.87 | 09/25/2025 | 23:27:32 | -69.97, 4.45 | 108.88 | 2.43 | 19 |
| 6 | 09/26/2025 | 00:18:20 | 69.05, 173.16 | 70.21 | 09/26/2025 | 00:17:13 | 69.10, 170.91 | 70.27 | 89.50 | 67 |
| 7 | 09/28/2025 | 14:54:01 | 70.05, -47.13 | 72.23 | 09/28/2025 | 14:54:30 | 70.05, -47.18 | 72.23 | 1.90 | 29 |
| 8 | 09/28/2025 | 15:44:42 | -69.93, 120.37 | 107.89 | 09/28/2025 | 15:44:00 | -69.95, 120.30 | 107.87 | 3.43 | 42 |
| 9 | 10/01/2025 | 06:20:16 | -70.51, -99.36 | 106.29 | 10/01/2025 | 06:21:27 | -70.37, -98.49 | 106.44 | 36.05 | 71 |
| 10 | 10/01/2025 | 07:10:54 | 70.06, 68.64 | 73.28 | 10/01/2025 | 07:10:58 | 70.04, 68.69 | 73.25 | 2.77 | 4 |
| 11 | 10/01/2025 | 08:01:35 | -69.94,-123.85 | 106.84 | 10/01/2025 | 08:00:28 | -69.93,-123.83 | 106.84 | 0.89 | 67 |
| 12 | 10/03/2025 | 22:37:01 | -70.10, 17.05 | 105.67 | 10/03/2025 | 22:37:59 | -70.10, 17.02 | 105.67 | 1.34 | 58 |
| 13 | 10/03/2025 | 23:27:45 | 69.97,-175.44 | 74.22 | 10/03/2025 | 23:27:26 | 69.99,-175.49 | 74.24 | 3.25 | 19 |
| 14 | 10/04/2025 | 00:18:15 | -69.26, -7.09 | 106.48 | 10/04/2025 | 00:17:06 | -69.34, -8.76 | 106.40 | 66.00 | 69 |
| 15 | 10/06/2025 | 14:53:53 | -70.07, 132.88 | 104.67 | 10/06/2025 | 14:54:26 | -70.08, 132.87 | 104.67 | 0.91 | 33 |
| 16 | 10/06/2025 | 15:44:37 | 69.94, -59.61 | 75.22 | 10/06/2025 | 15:43:53 | 69.96, -59.64 | 75.24 | 2.78 | 44 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/22/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/22/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8