Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and TERRA Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/20/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (TERRA) | Time (TERRA) | Lat,Lon (TERRA) | SZA (TERRA ) | Distance(km) | Time Diff (sec) |
| 1 | 10/22/2025 | 07:18:13 | 74.52, 58.25 | 85.76 | 10/22/2025 | 07:19:05 | 74.50, 58.30 | 85.73 | 2.19 | 52 |
| 2 | 10/22/2025 | 08:08:55 | -74.45,-134.25 | 94.31 | 10/22/2025 | 08:08:26 | -74.43,-134.19 | 94.32 | 2.31 | 29 |
| 3 | 10/24/2025 | 17:39:48 | -74.51, 82.87 | 93.41 | 10/24/2025 | 17:40:29 | -74.49, 82.87 | 93.44 | 2.23 | 41 |
| 4 | 10/24/2025 | 18:30:33 | 74.45,-109.66 | 86.54 | 10/24/2025 | 18:29:48 | 74.45,-109.55 | 86.54 | 3.34 | 45 |
| 5 | 10/27/2025 | 04:01:25 | 74.48, 107.55 | 87.39 | 10/27/2025 | 04:01:51 | 74.47, 107.44 | 87.38 | 3.50 | 26 |
| 6 | 10/27/2025 | 04:52:08 | -74.45, -85.05 | 92.64 | 10/27/2025 | 04:51:11 | -74.45, -84.94 | 92.63 | 3.30 | 57 |
| 7 | 10/29/2025 | 14:23:00 | -74.48, 132.15 | 91.81 | 10/29/2025 | 14:23:13 | -74.49, 132.08 | 91.80 | 2.36 | 13 |
| 8 | 10/29/2025 | 15:13:45 | 74.43, -60.40 | 88.15 | 10/29/2025 | 15:12:32 | 74.45, -60.34 | 88.18 | 3.07 | 73 |
| 9 | 10/31/2025 | 23:53:59 | -74.85, -11.58 | 90.62 | 10/31/2025 | 23:55:10 | -74.74, -10.37 | 90.79 | 37.49 | 71 |
| 10 | 11/01/2025 | 00:44:38 | 74.52, 156.64 | 89.03 | 11/01/2025 | 00:44:33 | 74.50, 156.73 | 89.01 | 3.13 | 5 |
Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 10/20/2025
Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 10/20/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and TERRA