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: 8/9/2025
| 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, 122.17 | 57.85 | 08/20/2025 | 03:34:27 | 70.24, 120.88 | 57.89 | 48.44 | 71 |
| 2 | 08/20/2025 | 04:26:30 | -70.65, -71.14 | 121.73 | 08/20/2025 | 04:25:15 | -70.62, -71.22 | 121.75 | 4.41 | 75 |
| 3 | 08/20/2025 | 05:17:16 | 70.68, 96.12 | 58.32 | 08/20/2025 | 05:16:15 | 70.67, 96.12 | 58.32 | 0.69 | 61 |
| 4 | 08/20/2025 | 06:08:01 | -70.71, -96.61 | 121.65 | 08/20/2025 | 06:07:10 | -70.69, -96.59 | 121.66 | 2.05 | 51 |
| 5 | 08/20/2025 | 06:58:46 | 70.69, 70.74 | 58.35 | 08/20/2025 | 06:58:11 | 70.69, 70.67 | 58.36 | 2.63 | 35 |
| 6 | 08/20/2025 | 07:49:31 | -70.71,-121.99 | 121.62 | 08/20/2025 | 07:49:06 | -70.71,-122.04 | 121.62 | 1.71 | 25 |
| 7 | 08/20/2025 | 08:40:17 | 70.74, 45.27 | 58.43 | 08/20/2025 | 08:40:06 | 70.76, 45.30 | 58.45 | 2.43 | 11 |
| 8 | 08/20/2025 | 09:31:02 | -70.77,-147.46 | 121.53 | 08/20/2025 | 09:31:01 | -70.78,-147.40 | 121.53 | 2.41 | 1 |
| 9 | 08/20/2025 | 10:21:48 | 70.80, 19.80 | 58.52 | 08/20/2025 | 10:22:02 | 70.78, 19.85 | 58.49 | 3.12 | 14 |
| 10 | 08/20/2025 | 11:12:32 | -70.77,-172.84 | 121.51 | 08/20/2025 | 11:12:57 | -70.80,-172.85 | 121.49 | 2.42 | 25 |
| 11 | 08/20/2025 | 12:03:18 | 70.81, -5.59 | 58.55 | 08/20/2025 | 12:03:58 | 70.80, -5.60 | 58.53 | 1.14 | 40 |
| 12 | 08/20/2025 | 12:54:03 | -70.83, 161.69 | 121.42 | 08/20/2025 | 12:54:53 | -70.81, 161.70 | 121.45 | 1.98 | 50 |
| 13 | 08/20/2025 | 13:44:48 | 70.81, -30.97 | 58.58 | 08/20/2025 | 13:45:54 | 70.82, -31.05 | 58.57 | 3.02 | 66 |
| 14 | 08/20/2025 | 14:35:34 | -70.89, 136.21 | 121.34 | 08/20/2025 | 14:36:48 | -70.88, 136.33 | 121.36 | 4.37 | 74 |
| 15 | 08/20/2025 | 15:26:30 | 71.44, -57.43 | 59.27 | 08/20/2025 | 15:27:39 | 71.40, -55.50 | 59.15 | 68.46 | 69 |
Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 8/9/2025
Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 08/09/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and NOAA-19