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: 9/14/2025
| 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 | 06:20:22 | -70.16, -98.88 | 112.83 | 09/15/2025 | 06:21:30 | -70.14, -98.82 | 112.86 | 3.18 | 68 |
| 2 | 09/15/2025 | 07:11:06 | 70.05, 68.61 | 67.06 | 09/15/2025 | 07:10:57 | 70.04, 68.69 | 67.06 | 2.88 | 9 |
| 3 | 09/15/2025 | 08:01:43 | -69.70,-123.55 | 113.29 | 09/15/2025 | 08:00:30 | -69.77,-124.07 | 113.21 | 21.55 | 73 |
| 4 | 09/17/2025 | 22:37:13 | -70.08, 17.03 | 111.89 | 09/17/2025 | 22:38:01 | -70.08, 16.97 | 111.89 | 2.41 | 48 |
| 5 | 09/17/2025 | 23:27:57 | 69.96,-175.48 | 68.01 | 09/17/2025 | 23:27:28 | 69.98,-175.54 | 68.02 | 2.57 | 29 |
| 6 | 09/20/2025 | 14:03:42 | 71.08, -36.13 | 70.17 | 09/20/2025 | 14:04:47 | 70.98, -33.44 | 70.03 | 97.70 | 65 |
| 7 | 09/20/2025 | 14:54:06 | -70.05, 132.85 | 110.88 | 09/20/2025 | 14:54:32 | -70.05, 132.81 | 110.88 | 1.52 | 26 |
| 8 | 09/20/2025 | 15:44:50 | 69.93, -59.66 | 69.02 | 09/20/2025 | 15:43:59 | 69.95, -59.70 | 69.03 | 1.99 | 51 |
| 9 | 09/23/2025 | 06:20:20 | 70.27, 80.97 | 70.37 | 09/23/2025 | 06:21:31 | 70.23, 81.30 | 70.32 | 13.53 | 71 |
| 10 | 09/23/2025 | 07:10:59 | -70.03,-111.34 | 109.86 | 09/23/2025 | 07:11:03 | -70.01,-111.37 | 109.88 | 2.33 | 4 |
| 11 | 09/23/2025 | 08:01:43 | 69.91, 56.15 | 70.03 | 09/23/2025 | 08:00:30 | 69.90, 56.12 | 70.03 | 1.38 | 73 |
| 12 | 09/25/2025 | 22:37:10 | 70.10,-162.98 | 71.24 | 09/25/2025 | 22:38:03 | 70.12,-162.98 | 71.25 | 1.94 | 53 |
| 13 | 09/25/2025 | 23:27:52 | -70.02, 4.46 | 108.84 | 09/25/2025 | 23:27:33 | -70.02, 4.51 | 108.84 | 1.85 | 19 |
| 14 | 09/26/2025 | 00:18:21 | 69.10, 173.10 | 70.25 | 09/26/2025 | 00:17:14 | 69.13, 170.95 | 70.30 | 85.32 | 67 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/14/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/14/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8