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: 6/20/2025
| 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 | 06/20/2025 | 14:28:45 | 70.09, -40.87 | 46.61 | 06/20/2025 | 14:29:11 | 70.09, -40.93 | 46.60 | 2.29 | 26 |
| 2 | 06/20/2025 | 15:19:26 | -69.98, 126.62 | 133.51 | 06/20/2025 | 15:18:41 | -69.97, 126.55 | 133.51 | 2.97 | 45 |
| 3 | 06/23/2025 | 05:55:01 | -70.42, -92.91 | 133.03 | 06/23/2025 | 05:56:12 | -70.33, -92.34 | 133.15 | 23.31 | 71 |
| 4 | 06/23/2025 | 06:45:41 | 70.06, 74.95 | 46.60 | 06/23/2025 | 06:45:42 | 70.06, 74.92 | 46.60 | 1.17 | 1 |
| 5 | 06/23/2025 | 07:36:22 | -69.95,-117.56 | 133.53 | 06/23/2025 | 07:35:12 | -69.95,-117.60 | 133.51 | 1.86 | 70 |
| 6 | 06/25/2025 | 22:11:52 | -70.12, 23.31 | 133.28 | 06/25/2025 | 22:12:46 | -70.13, 23.25 | 133.27 | 2.68 | 54 |
| 7 | 06/25/2025 | 23:02:37 | 70.03,-169.25 | 46.64 | 06/25/2025 | 23:02:13 | 70.02,-169.26 | 46.63 | 0.95 | 24 |
| 8 | 06/25/2025 | 23:53:04 | -69.17, -0.67 | 134.26 | 06/25/2025 | 23:51:56 | -69.20, -2.74 | 134.15 | 81.85 | 68 |
| 9 | 06/28/2025 | 14:28:48 | -70.09, 139.12 | 133.19 | 06/28/2025 | 14:29:17 | -70.08, 139.06 | 133.20 | 2.66 | 29 |
| 10 | 06/28/2025 | 15:19:33 | 70.01, -53.45 | 46.73 | 06/28/2025 | 15:18:43 | 70.02, -53.38 | 46.75 | 3.20 | 50 |
| 11 | 07/01/2025 | 05:55:04 | 70.30, 87.24 | 47.20 | 07/01/2025 | 05:56:14 | 70.28, 87.59 | 47.15 | 13.56 | 70 |
| 12 | 07/01/2025 | 06:45:43 | -70.07,-105.08 | 133.05 | 07/01/2025 | 06:45:46 | -70.07,-105.08 | 133.05 | 0.31 | 3 |
| 13 | 07/01/2025 | 07:36:26 | 69.88, 62.51 | 46.77 | 07/01/2025 | 07:35:14 | 69.90, 62.33 | 46.80 | 6.94 | 72 |
| 14 | 07/03/2025 | 22:11:57 | 70.13,-156.73 | 47.24 | 07/03/2025 | 22:12:46 | 70.14,-156.72 | 47.23 | 0.97 | 49 |
| 15 | 07/03/2025 | 23:02:39 | -70.05, 10.72 | 132.85 | 07/03/2025 | 23:02:16 | -70.04, 10.77 | 132.86 | 1.88 | 23 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/20/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 06/20/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9