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: 9/24/2025
| 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 | 09/25/2025 | 22:37:09 | 70.09,-162.97 | 71.23 | 09/25/2025 | 22:38:01 | 70.11,-162.99 | 71.25 | 2.16 | 52 |
| 2 | 09/25/2025 | 23:27:51 | -70.02, 4.45 | 108.83 | 09/25/2025 | 23:27:31 | -70.00, 4.48 | 108.86 | 3.15 | 20 |
| 3 | 09/26/2025 | 00:18:19 | 69.04, 173.19 | 70.19 | 09/26/2025 | 00:17:12 | 69.12, 170.94 | 70.29 | 89.49 | 67 |
| 4 | 09/28/2025 | 14:54:02 | 70.10, -47.20 | 72.27 | 09/28/2025 | 14:54:30 | 70.08, -47.15 | 72.25 | 2.76 | 28 |
| 5 | 09/28/2025 | 15:44:43 | -69.98, 120.31 | 107.84 | 09/28/2025 | 15:44:00 | -69.97, 120.33 | 107.85 | 1.21 | 43 |
| 6 | 10/01/2025 | 06:20:16 | -70.51, -99.37 | 106.29 | 10/01/2025 | 06:21:27 | -70.39, -98.46 | 106.42 | 36.35 | 71 |
| 7 | 10/01/2025 | 07:10:54 | 70.06, 68.64 | 73.28 | 10/01/2025 | 07:10:58 | 70.06, 68.72 | 73.28 | 2.94 | 4 |
| 8 | 10/01/2025 | 08:01:35 | -69.94,-123.86 | 106.84 | 10/01/2025 | 08:00:28 | -69.95,-123.80 | 106.82 | 2.63 | 67 |
| 9 | 10/03/2025 | 22:37:01 | -70.12, 17.03 | 105.65 | 10/03/2025 | 22:37:59 | -70.12, 17.04 | 105.65 | 0.80 | 58 |
| 10 | 10/03/2025 | 23:27:45 | 69.98,-175.46 | 74.23 | 10/03/2025 | 23:27:26 | 70.01,-175.47 | 74.26 | 3.09 | 19 |
| 11 | 10/04/2025 | 00:18:15 | -69.28, -7.11 | 106.47 | 10/04/2025 | 00:17:06 | -69.35, -8.73 | 106.39 | 64.30 | 69 |
| 12 | 10/06/2025 | 14:53:52 | -70.10, 132.84 | 104.64 | 10/06/2025 | 14:54:25 | -70.09, 132.89 | 104.65 | 2.50 | 33 |
| 13 | 10/06/2025 | 15:44:36 | 69.97, -59.65 | 75.25 | 10/06/2025 | 15:43:52 | 69.97, -59.63 | 75.25 | 1.16 | 44 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/24/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/24/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8