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 | -70.41, -92.90 | 133.04 | 06/23/2025 | 05:56:12 | -70.34, -92.33 | 133.14 | 22.60 | 71 |
| 2 | 06/23/2025 | 06:45:41 | 70.05, 74.96 | 46.59 | 06/23/2025 | 06:45:42 | 70.07, 74.93 | 46.61 | 2.99 | 1 |
| 3 | 06/23/2025 | 07:36:22 | -69.94,-117.55 | 133.53 | 06/23/2025 | 07:35:12 | -69.96,-117.59 | 133.50 | 3.13 | 70 |
| 4 | 06/25/2025 | 22:11:53 | -70.16, 23.25 | 133.23 | 06/25/2025 | 22:12:46 | -70.14, 23.26 | 133.26 | 2.51 | 53 |
| 5 | 06/25/2025 | 23:02:37 | 70.02,-169.23 | 46.62 | 06/25/2025 | 23:02:13 | 70.04,-169.24 | 46.64 | 1.92 | 24 |
| 6 | 06/25/2025 | 23:53:04 | -69.16, -0.66 | 134.27 | 06/25/2025 | 23:51:56 | -69.21, -2.73 | 134.14 | 82.07 | 68 |
| 7 | 06/28/2025 | 14:28:47 | -70.08, 139.14 | 133.20 | 06/28/2025 | 14:29:16 | -70.09, 139.08 | 133.19 | 3.01 | 29 |
| 8 | 06/28/2025 | 15:19:32 | 69.99, -53.42 | 46.71 | 06/28/2025 | 15:18:43 | 69.98, -53.43 | 46.71 | 1.13 | 49 |
| 9 | 07/01/2025 | 05:55:04 | 70.28, 87.27 | 47.18 | 07/01/2025 | 05:56:15 | 70.24, 87.54 | 47.12 | 11.12 | 71 |
| 10 | 07/01/2025 | 06:45:44 | -70.10,-105.13 | 133.01 | 07/01/2025 | 06:45:46 | -70.09,-105.05 | 133.03 | 3.41 | 2 |
| 11 | 07/01/2025 | 07:36:27 | 69.92, 62.46 | 46.80 | 07/01/2025 | 07:35:14 | 69.92, 62.35 | 46.81 | 3.89 | 73 |
| 12 | 07/03/2025 | 22:11:58 | 70.16,-156.77 | 47.26 | 07/03/2025 | 22:12:46 | 70.16,-156.69 | 47.26 | 2.94 | 48 |
| 13 | 07/03/2025 | 23:02:39 | -70.02, 10.76 | 132.88 | 07/03/2025 | 23:02:17 | -70.01, 10.72 | 132.89 | 2.09 | 22 |
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