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: 9/21/2025
| 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 | 70.26, 80.99 | 70.36 | 09/23/2025 | 06:21:31 | 70.21, 81.27 | 70.30 | 12.32 | 71 |
| 2 | 09/23/2025 | 07:10:59 | -70.03,-111.34 | 109.87 | 09/23/2025 | 07:11:02 | -70.04,-111.33 | 109.86 | 1.36 | 3 |
| 3 | 09/23/2025 | 08:01:43 | 69.90, 56.17 | 70.02 | 09/23/2025 | 08:00:30 | 69.89, 56.09 | 70.01 | 3.25 | 73 |
| 4 | 09/25/2025 | 22:37:09 | 70.09,-162.97 | 71.23 | 09/25/2025 | 22:38:01 | 70.12,-162.97 | 71.25 | 3.09 | 52 |
| 5 | 09/25/2025 | 23:27:51 | -70.02, 4.46 | 108.84 | 09/25/2025 | 23:27:31 | -70.01, 4.50 | 108.85 | 1.95 | 20 |
| 6 | 09/26/2025 | 00:18:19 | 69.04, 173.19 | 70.19 | 09/26/2025 | 00:17:12 | 69.13, 170.96 | 70.30 | 89.13 | 67 |
| 7 | 09/28/2025 | 14:54:02 | 70.09, -47.18 | 72.26 | 09/28/2025 | 14:54:31 | 70.06, -47.18 | 72.23 | 3.19 | 29 |
| 8 | 09/28/2025 | 15:44:43 | -69.96, 120.33 | 107.85 | 09/28/2025 | 15:44:01 | -69.95, 120.30 | 107.87 | 1.50 | 42 |
| 9 | 10/01/2025 | 06:20:17 | -70.53, -99.41 | 106.26 | 10/01/2025 | 06:21:28 | -70.41, -98.43 | 106.40 | 38.90 | 71 |
| 10 | 10/01/2025 | 07:10:54 | 70.04, 68.67 | 73.25 | 10/01/2025 | 07:11:00 | 70.03, 68.66 | 73.24 | 1.23 | 6 |
| 11 | 10/01/2025 | 08:01:35 | -69.91,-123.82 | 106.87 | 10/01/2025 | 08:00:30 | -69.92,-123.85 | 106.86 | 1.77 | 65 |
| 12 | 10/03/2025 | 22:37:02 | -70.12, 17.02 | 105.65 | 10/03/2025 | 22:38:01 | -70.14, 17.06 | 105.63 | 2.26 | 59 |
| 13 | 10/03/2025 | 23:27:46 | 69.99,-175.48 | 74.24 | 10/03/2025 | 23:27:29 | 69.97,-175.53 | 74.22 | 3.44 | 17 |
| 14 | 10/04/2025 | 00:18:17 | -69.34, -7.20 | 106.41 | 10/04/2025 | 00:17:07 | -69.43, -8.64 | 106.32 | 57.46 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/21/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/21/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8