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: 8/4/2025
| 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 | 08/04/2025 | 22:12:05 | 70.15,-156.79 | 53.17 | 08/04/2025 | 22:13:00 | 70.14,-156.72 | 53.15 | 2.73 | 55 |
| 2 | 08/04/2025 | 23:02:47 | -70.04, 10.70 | 126.95 | 08/04/2025 | 23:02:30 | -70.03, 10.75 | 126.95 | 2.00 | 17 |
| 3 | 08/04/2025 | 23:53:17 | 69.20, 179.23 | 52.19 | 08/04/2025 | 23:52:09 | 69.27, 177.35 | 52.34 | 74.44 | 68 |
| 4 | 08/07/2025 | 14:28:59 | 70.08, -40.91 | 53.83 | 08/07/2025 | 14:29:33 | 70.06, -40.96 | 53.81 | 2.73 | 34 |
| 5 | 08/07/2025 | 15:19:41 | -69.96, 126.58 | 126.29 | 08/07/2025 | 15:19:03 | -69.96, 126.52 | 126.29 | 2.44 | 38 |
| 6 | 08/10/2025 | 05:55:20 | -70.68, -93.39 | 124.79 | 08/10/2025 | 05:56:30 | -70.57, -91.99 | 124.95 | 53.15 | 70 |
| 7 | 08/10/2025 | 06:45:54 | 70.07, 74.87 | 54.59 | 08/10/2025 | 06:46:04 | 70.08, 74.94 | 54.59 | 2.75 | 10 |
| 8 | 08/10/2025 | 07:36:36 | -69.95,-117.62 | 125.53 | 08/10/2025 | 07:35:35 | -69.92,-117.65 | 125.55 | 3.23 | 61 |
| 9 | 08/12/2025 | 22:12:05 | -70.14, 23.22 | 124.55 | 08/12/2025 | 22:13:09 | -70.14, 23.25 | 124.57 | 1.30 | 64 |
| 10 | 08/12/2025 | 23:02:48 | 70.01,-169.27 | 55.33 | 08/12/2025 | 23:02:36 | 70.03,-169.26 | 55.34 | 1.45 | 12 |
| 11 | 08/12/2025 | 23:53:22 | -69.52, -1.21 | 125.19 | 08/12/2025 | 23:52:11 | -69.60, -2.23 | 125.07 | 40.28 | 71 |
| 12 | 08/15/2025 | 14:28:58 | -70.09, 139.08 | 123.79 | 08/15/2025 | 14:29:40 | -70.07, 139.03 | 123.81 | 2.71 | 42 |
| 13 | 08/15/2025 | 15:19:41 | 69.96, -53.41 | 56.09 | 08/15/2025 | 15:19:07 | 69.96, -53.48 | 56.10 | 2.67 | 34 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/4/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/04/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9