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: 11/15/2025
| 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 | 11/18/2025 | 07:10:28 | 70.06, 68.77 | 89.26 | 11/18/2025 | 07:11:03 | 70.07, 68.69 | 89.26 | 3.01 | 35 |
| 2 | 11/18/2025 | 08:01:10 | -69.98,-123.78 | 90.83 | 11/18/2025 | 08:00:33 | -69.96,-123.82 | 90.84 | 2.17 | 37 |
| 3 | 11/20/2025 | 22:36:51 | -70.52, 16.50 | 89.69 | 11/20/2025 | 22:38:02 | -70.37, 17.35 | 89.84 | 35.87 | 71 |
| 4 | 11/20/2025 | 23:27:28 | 70.03,-175.43 | 89.84 | 11/20/2025 | 23:27:33 | 70.04,-175.47 | 89.84 | 1.75 | 5 |
| 5 | 11/21/2025 | 00:18:10 | -69.94, -7.97 | 90.25 | 11/21/2025 | 00:17:03 | -69.93, -7.99 | 90.26 | 0.88 | 67 |
| 6 | 11/23/2025 | 14:53:44 | -70.12, 132.87 | 89.51 | 11/23/2025 | 14:54:35 | -70.13, 132.89 | 89.51 | 0.80 | 51 |
| 7 | 11/23/2025 | 15:44:28 | 70.01, -59.65 | 90.39 | 11/23/2025 | 15:44:02 | 70.01, -59.63 | 90.39 | 1.00 | 26 |
| 8 | 11/23/2025 | 16:34:54 | -69.07, 109.04 | 90.56 | 11/23/2025 | 16:33:47 | -69.09, 106.75 | 90.54 | 90.96 | 67 |
| 9 | 11/26/2025 | 06:20:15 | 70.90, 80.06 | 91.80 | 11/26/2025 | 06:21:22 | 70.82, 82.17 | 91.71 | 77.57 | 67 |
| 10 | 11/26/2025 | 07:10:43 | -70.06,-111.28 | 89.05 | 11/26/2025 | 07:11:04 | -70.06,-111.32 | 89.05 | 1.66 | 21 |
| 11 | 11/26/2025 | 08:01:26 | 69.96, 56.19 | 90.85 | 11/26/2025 | 08:00:30 | 69.95, 56.16 | 90.84 | 1.44 | 56 |
| 12 | 11/28/2025 | 22:36:59 | 70.12,-162.93 | 91.49 | 11/28/2025 | 22:38:01 | 70.11,-163.00 | 91.47 | 2.92 | 62 |
| 13 | 11/28/2025 | 23:27:41 | -70.01, 4.56 | 88.63 | 11/28/2025 | 23:27:31 | -70.01, 4.49 | 88.63 | 2.55 | 10 |
| 14 | 11/29/2025 | 00:18:16 | 69.43, 172.72 | 90.80 | 11/29/2025 | 00:17:06 | 69.45, 171.37 | 90.82 | 52.72 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 11/15/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 11/15/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8