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: 6/21/2025
| 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 | 06/23/2025 | 05:55:01 | -70.39, -92.87 | 133.07 | 06/23/2025 | 05:56:13 | -70.31, -92.38 | 133.17 | 20.31 | 72 |
| 2 | 06/23/2025 | 06:45:42 | 70.08, 74.91 | 46.62 | 06/23/2025 | 06:45:42 | 70.10, 74.96 | 46.63 | 2.48 | 0 |
| 3 | 06/23/2025 | 07:36:23 | -69.97,-117.60 | 133.50 | 06/23/2025 | 07:35:12 | -69.98,-117.56 | 133.48 | 2.17 | 71 |
| 4 | 06/25/2025 | 22:11:52 | -70.14, 23.28 | 133.25 | 06/25/2025 | 22:12:45 | -70.16, 23.30 | 133.24 | 2.61 | 53 |
| 5 | 06/25/2025 | 23:02:37 | 70.05,-169.28 | 46.66 | 06/25/2025 | 23:02:12 | 70.06,-169.21 | 46.66 | 2.66 | 25 |
| 6 | 06/25/2025 | 23:53:03 | -69.14, -0.63 | 134.29 | 06/25/2025 | 23:51:56 | -69.18, -2.77 | 134.17 | 84.91 | 67 |
| 7 | 06/28/2025 | 14:28:48 | -70.11, 139.09 | 133.17 | 06/28/2025 | 14:29:16 | -70.12, 139.11 | 133.17 | 1.04 | 28 |
| 8 | 06/28/2025 | 15:19:33 | 70.03, -53.47 | 46.75 | 06/28/2025 | 15:18:43 | 70.01, -53.40 | 46.73 | 3.43 | 50 |
| 9 | 07/01/2025 | 05:55:04 | 70.26, 87.30 | 47.16 | 07/01/2025 | 05:56:16 | 70.21, 87.49 | 47.09 | 9.38 | 72 |
| 10 | 07/01/2025 | 06:45:44 | -70.08,-105.10 | 133.03 | 07/01/2025 | 06:45:47 | -70.06,-105.10 | 133.06 | 2.86 | 3 |
| 11 | 07/01/2025 | 07:36:27 | 69.90, 62.49 | 46.78 | 07/01/2025 | 07:35:14 | 69.94, 62.39 | 46.84 | 6.12 | 73 |
| 12 | 07/03/2025 | 22:11:58 | 70.14,-156.74 | 47.24 | 07/03/2025 | 22:12:47 | 70.13,-156.74 | 47.23 | 0.91 | 49 |
| 13 | 07/03/2025 | 23:02:40 | -70.06, 10.70 | 132.84 | 07/03/2025 | 23:02:17 | -70.03, 10.76 | 132.87 | 3.14 | 23 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/21/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 06/21/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9