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: 9/12/2025
| 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 | 09/15/2025 | 06:20:21 | -70.13, -98.82 | 112.87 | 09/15/2025 | 06:21:30 | -70.13, -98.83 | 112.87 | 0.84 | 69 |
| 2 | 09/15/2025 | 07:11:05 | 70.01, 68.66 | 67.03 | 09/15/2025 | 07:10:57 | 70.03, 68.67 | 67.05 | 2.27 | 8 |
| 3 | 09/15/2025 | 08:01:43 | -69.71,-123.57 | 113.27 | 09/15/2025 | 08:00:30 | -69.76,-124.08 | 113.21 | 20.28 | 73 |
| 4 | 09/17/2025 | 22:37:14 | -70.09, 17.01 | 111.88 | 09/17/2025 | 22:38:02 | -70.08, 16.97 | 111.89 | 1.69 | 48 |
| 5 | 09/17/2025 | 23:27:58 | 69.98,-175.51 | 68.02 | 09/17/2025 | 23:27:29 | 69.98,-175.53 | 68.03 | 0.98 | 29 |
| 6 | 09/20/2025 | 14:03:42 | 71.09, -36.15 | 70.18 | 09/20/2025 | 14:04:47 | 71.01, -33.41 | 70.06 | 99.55 | 65 |
| 7 | 09/20/2025 | 14:54:06 | -70.06, 132.83 | 110.87 | 09/20/2025 | 14:54:32 | -70.08, 132.85 | 110.85 | 2.18 | 26 |
| 8 | 09/20/2025 | 15:44:50 | 69.95, -59.68 | 69.03 | 09/20/2025 | 15:43:59 | 69.97, -59.66 | 69.06 | 3.27 | 51 |
| 9 | 09/23/2025 | 06:20:21 | 70.33, 80.87 | 70.44 | 09/23/2025 | 06:21:32 | 70.23, 81.30 | 70.32 | 19.61 | 71 |
| 10 | 09/23/2025 | 07:10:59 | -70.04,-111.35 | 109.86 | 09/23/2025 | 07:11:04 | -70.02,-111.37 | 109.88 | 2.13 | 5 |
| 11 | 09/23/2025 | 08:01:43 | 69.92, 56.14 | 70.04 | 09/23/2025 | 08:00:31 | 69.91, 56.12 | 70.03 | 1.33 | 72 |
| 12 | 09/25/2025 | 22:37:10 | 70.10,-162.98 | 71.24 | 09/25/2025 | 22:38:05 | 70.10,-163.01 | 71.24 | 1.02 | 55 |
| 13 | 09/25/2025 | 23:27:52 | -70.02, 4.46 | 108.84 | 09/25/2025 | 23:27:35 | -70.00, 4.48 | 108.85 | 1.52 | 17 |
| 14 | 09/26/2025 | 00:18:22 | 69.15, 173.03 | 70.30 | 09/26/2025 | 00:17:14 | 69.23, 171.07 | 70.40 | 77.67 | 68 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/12/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/12/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8