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: 9/9/2025
| 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 | 09/09/2025 | 22:37:19 | 70.09,-163.01 | 65.07 | 09/09/2025 | 22:37:54 | 70.11,-162.97 | 65.08 | 2.43 | 35 |
| 2 | 09/09/2025 | 23:28:01 | -69.99, 4.45 | 115.02 | 09/09/2025 | 23:27:24 | -69.99, 4.50 | 115.02 | 1.69 | 37 |
| 3 | 09/12/2025 | 14:03:39 | -70.73, 144.44 | 113.27 | 09/12/2025 | 14:04:48 | -70.63, 146.03 | 113.41 | 59.70 | 69 |
| 4 | 09/12/2025 | 14:54:12 | 70.05, -47.17 | 66.04 | 09/12/2025 | 14:54:24 | 70.03, -47.19 | 66.03 | 1.69 | 12 |
| 5 | 09/12/2025 | 15:44:54 | -69.95, 120.29 | 114.05 | 09/12/2025 | 15:43:54 | -69.92, 120.28 | 114.08 | 3.59 | 60 |
| 6 | 09/15/2025 | 06:20:21 | -70.12, -98.81 | 112.88 | 09/15/2025 | 06:21:26 | -70.10, -98.85 | 112.90 | 2.42 | 65 |
| 7 | 09/15/2025 | 07:11:05 | 70.01, 68.67 | 67.03 | 09/15/2025 | 07:10:53 | 70.00, 68.64 | 67.01 | 1.60 | 12 |
| 8 | 09/15/2025 | 08:01:40 | -69.55,-123.33 | 113.44 | 09/15/2025 | 08:00:28 | -69.61,-124.26 | 113.35 | 36.64 | 72 |
| 9 | 09/17/2025 | 22:37:14 | -70.09, 17.01 | 111.88 | 09/17/2025 | 22:37:54 | -70.11, 17.04 | 111.87 | 2.16 | 40 |
| 10 | 09/17/2025 | 23:27:58 | 69.98,-175.51 | 68.03 | 09/17/2025 | 23:27:21 | 70.00,-175.47 | 68.04 | 2.68 | 37 |
| 11 | 09/20/2025 | 14:03:35 | 70.74, -35.55 | 69.81 | 09/20/2025 | 14:04:43 | 70.64, -33.93 | 69.69 | 60.61 | 68 |
| 12 | 09/20/2025 | 14:54:06 | -70.07, 132.83 | 110.87 | 09/20/2025 | 14:54:22 | -70.04, 132.83 | 110.90 | 3.16 | 16 |
| 13 | 09/20/2025 | 15:44:50 | 69.95, -59.69 | 69.03 | 09/20/2025 | 15:43:49 | 69.93, -59.68 | 69.01 | 3.02 | 61 |
| 14 | 09/23/2025 | 06:20:17 | 70.14, 81.18 | 70.23 | 09/23/2025 | 06:21:20 | 70.11, 81.19 | 70.20 | 3.09 | 63 |
| 15 | 09/23/2025 | 07:10:58 | -70.00,-111.29 | 109.90 | 09/23/2025 | 07:10:50 | -70.01,-111.33 | 109.89 | 1.88 | 8 |
| 16 | 09/23/2025 | 08:01:34 | 69.46, 56.82 | 69.57 | 09/23/2025 | 08:00:24 | 69.50, 55.63 | 69.63 | 46.75 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/9/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/09/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8