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: 9/10/2025
| 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 | 09/12/2025 | 14:03:40 | -70.79, 144.35 | 113.21 | 09/12/2025 | 14:04:49 | -70.67, 146.09 | 113.37 | 65.27 | 69 |
| 2 | 09/12/2025 | 14:54:12 | 70.05, -47.17 | 66.04 | 09/12/2025 | 14:54:25 | 70.07, -47.14 | 66.06 | 2.74 | 13 |
| 3 | 09/12/2025 | 15:44:54 | -69.96, 120.28 | 114.04 | 09/12/2025 | 15:43:55 | -69.97, 120.34 | 114.03 | 2.28 | 59 |
| 4 | 09/15/2025 | 06:20:21 | -70.13, -98.82 | 112.87 | 09/15/2025 | 06:21:30 | -70.12, -98.85 | 112.88 | 1.13 | 69 |
| 5 | 09/15/2025 | 07:11:05 | 70.01, 68.66 | 67.03 | 09/15/2025 | 07:10:57 | 70.01, 68.64 | 67.03 | 0.66 | 8 |
| 6 | 09/15/2025 | 08:01:42 | -69.66,-123.49 | 113.32 | 09/15/2025 | 08:00:30 | -69.74,-124.10 | 113.23 | 25.20 | 72 |
| 7 | 09/17/2025 | 22:37:14 | -70.10, 17.01 | 111.87 | 09/17/2025 | 22:38:01 | -70.10, 17.00 | 111.87 | 0.76 | 47 |
| 8 | 09/17/2025 | 23:27:58 | 69.98,-175.51 | 68.03 | 09/17/2025 | 23:27:28 | 69.99,-175.51 | 68.04 | 0.93 | 30 |
| 9 | 09/20/2025 | 14:03:41 | 71.05, -36.07 | 70.14 | 09/20/2025 | 14:04:47 | 70.93, -33.52 | 69.98 | 93.53 | 66 |
| 10 | 09/20/2025 | 14:54:06 | -70.07, 132.82 | 110.86 | 09/20/2025 | 14:54:31 | -70.07, 132.83 | 110.87 | 0.51 | 25 |
| 11 | 09/20/2025 | 15:44:50 | 69.95, -59.69 | 69.04 | 09/20/2025 | 15:43:58 | 69.95, -59.69 | 69.03 | 0.48 | 52 |
| 12 | 09/23/2025 | 06:20:19 | 70.24, 81.02 | 70.34 | 09/23/2025 | 06:21:30 | 70.22, 81.29 | 70.31 | 10.70 | 71 |
| 13 | 09/23/2025 | 07:10:59 | -70.05,-111.37 | 109.85 | 09/23/2025 | 07:11:01 | -70.07,-111.29 | 109.83 | 3.51 | 2 |
| 14 | 09/23/2025 | 08:01:42 | 69.88, 56.20 | 70.00 | 09/23/2025 | 08:00:29 | 69.90, 56.11 | 70.02 | 3.63 | 73 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/10/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/10/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8