Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 8/25/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 08/26/2025 | 05:55:23 | -70.97, -93.87 | 119.35 | 08/26/2025 | 05:56:30 | -70.83, -91.60 | 119.56 | 83.98 | 67 |
| 2 | 08/26/2025 | 06:45:51 | 70.04, 74.93 | 59.70 | 08/26/2025 | 06:46:10 | 70.02, 74.85 | 59.67 | 3.69 | 19 |
| 3 | 08/26/2025 | 07:36:33 | -69.93,-117.59 | 120.41 | 08/26/2025 | 07:35:39 | -69.96,-117.60 | 120.38 | 3.38 | 54 |
| 4 | 08/28/2025 | 22:12:01 | -70.10, 23.30 | 119.32 | 08/28/2025 | 22:13:12 | -70.11, 23.22 | 119.32 | 3.38 | 71 |
| 5 | 08/28/2025 | 23:02:45 | 70.01,-169.25 | 60.60 | 08/28/2025 | 23:02:39 | 70.01,-169.27 | 60.60 | 1.08 | 6 |
| 6 | 08/28/2025 | 23:53:24 | -69.74, -1.53 | 119.68 | 08/28/2025 | 23:52:11 | -69.79, -1.95 | 119.61 | 17.49 | 73 |
| 7 | 08/31/2025 | 14:28:55 | -70.07, 139.12 | 118.40 | 08/31/2025 | 14:29:41 | -70.09, 139.08 | 118.38 | 2.68 | 46 |
| 8 | 08/31/2025 | 15:19:39 | 69.98, -53.43 | 61.52 | 08/31/2025 | 15:19:08 | 69.99, -53.43 | 61.53 | 0.71 | 31 |
| 9 | 09/03/2025 | 05:55:21 | 70.90, 86.26 | 63.43 | 09/03/2025 | 05:56:28 | 70.81, 88.40 | 63.29 | 78.80 | 67 |
| 10 | 09/03/2025 | 06:45:49 | -70.05,-105.07 | 117.45 | 09/03/2025 | 06:46:10 | -70.05,-105.10 | 117.45 | 0.93 | 21 |
| 11 | 09/03/2025 | 07:36:33 | 69.96, 62.38 | 62.47 | 09/03/2025 | 07:35:37 | 69.94, 62.40 | 62.46 | 2.08 | 56 |
| 12 | 09/05/2025 | 22:12:00 | 70.14,-156.76 | 63.63 | 09/05/2025 | 22:13:07 | 70.15,-156.70 | 63.62 | 2.36 | 67 |
| 13 | 09/05/2025 | 23:02:42 | -70.03, 10.73 | 116.48 | 09/05/2025 | 23:02:37 | -70.04, 10.78 | 116.48 | 2.26 | 5 |
| 14 | 09/05/2025 | 23:53:20 | 69.62, 178.65 | 63.11 | 09/05/2025 | 23:52:08 | 69.71, 177.96 | 63.22 | 28.20 | 72 |
| 15 | 09/08/2025 | 14:28:53 | 70.08, -40.89 | 64.56 | 09/08/2025 | 14:29:36 | 70.06, -40.93 | 64.54 | 2.33 | 43 |
| 16 | 09/08/2025 | 15:19:35 | -69.97, 126.60 | 115.55 | 09/08/2025 | 15:19:06 | -69.96, 126.56 | 115.56 | 1.93 | 29 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/25/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/25/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9