Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and NOAA-19 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 8/12/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (NOAA-19) | Time (NOAA-19) | Lat,Lon (NOAA-19) | SZA (NOAA-19 ) | Distance(km) | Time Diff (sec) |
| 1 | 08/20/2025 | 03:35:38 | 70.25, 122.18 | 57.85 | 08/20/2025 | 03:34:27 | 70.23, 120.87 | 57.88 | 49.34 | 71 |
| 2 | 08/20/2025 | 04:26:30 | -70.65, -71.14 | 121.73 | 08/20/2025 | 04:25:15 | -70.60, -71.24 | 121.76 | 6.32 | 75 |
| 3 | 08/20/2025 | 05:17:16 | 70.68, 96.12 | 58.32 | 08/20/2025 | 05:16:15 | 70.66, 96.10 | 58.31 | 2.06 | 61 |
| 4 | 08/20/2025 | 06:08:01 | -70.71, -96.61 | 121.65 | 08/20/2025 | 06:07:10 | -70.67, -96.61 | 121.67 | 3.69 | 51 |
| 5 | 08/20/2025 | 06:58:47 | 70.74, 70.65 | 58.40 | 08/20/2025 | 06:58:10 | 70.73, 70.73 | 58.40 | 3.03 | 37 |
| 6 | 08/20/2025 | 07:49:31 | -70.71,-121.99 | 121.62 | 08/20/2025 | 07:49:06 | -70.69,-122.06 | 121.63 | 3.35 | 25 |
| 7 | 08/20/2025 | 08:40:17 | 70.74, 45.27 | 58.43 | 08/20/2025 | 08:40:06 | 70.75, 45.28 | 58.44 | 0.95 | 11 |
| 8 | 08/20/2025 | 09:31:02 | -70.77,-147.46 | 121.53 | 08/20/2025 | 09:31:01 | -70.76,-147.43 | 121.54 | 1.63 | 1 |
| 9 | 08/20/2025 | 10:21:47 | 70.75, 19.88 | 58.46 | 08/20/2025 | 10:22:02 | 70.77, 19.83 | 58.48 | 3.01 | 15 |
| 10 | 08/20/2025 | 11:12:32 | -70.78,-172.85 | 121.50 | 08/20/2025 | 11:12:57 | -70.78,-172.88 | 121.50 | 1.24 | 25 |
| 11 | 08/20/2025 | 12:03:18 | 70.81, -5.59 | 58.54 | 08/20/2025 | 12:03:58 | 70.79, -5.62 | 58.52 | 2.65 | 40 |
| 12 | 08/20/2025 | 12:54:03 | -70.83, 161.68 | 121.42 | 08/20/2025 | 12:54:52 | -70.85, 161.76 | 121.41 | 3.38 | 49 |
| 13 | 08/20/2025 | 13:44:49 | 70.86, -31.06 | 58.63 | 08/20/2025 | 13:45:53 | 70.86, -30.99 | 58.61 | 2.68 | 64 |
| 14 | 08/20/2025 | 14:35:34 | -70.89, 136.21 | 121.33 | 08/20/2025 | 14:36:48 | -70.87, 136.31 | 121.37 | 4.25 | 74 |
| 15 | 08/20/2025 | 15:26:30 | 71.44, -57.42 | 59.27 | 08/20/2025 | 15:27:39 | 71.39, -55.52 | 59.14 | 67.65 | 69 |
Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 8/12/2025
Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 08/12/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and NOAA-19