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: 6/9/2025
| 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 | 06/09/2025 | 22:11:43 | -70.13, 23.34 | 132.94 | 06/09/2025 | 22:12:34 | -70.15, 23.29 | 132.93 | 2.91 | 51 |
| 2 | 06/09/2025 | 23:02:28 | 70.03,-169.20 | 46.95 | 06/09/2025 | 23:02:01 | 70.05,-169.20 | 46.98 | 2.91 | 27 |
| 3 | 06/09/2025 | 23:52:53 | -69.07, -0.49 | 134.04 | 06/09/2025 | 23:51:46 | -69.11, -2.84 | 133.93 | 93.30 | 67 |
| 4 | 06/12/2025 | 13:38:15 | 71.13, -29.84 | 47.94 | 06/12/2025 | 13:39:21 | 71.03, -27.15 | 47.75 | 97.55 | 66 |
| 5 | 06/12/2025 | 14:28:39 | -70.13, 139.11 | 133.12 | 06/12/2025 | 14:29:06 | -70.10, 139.09 | 133.16 | 3.45 | 27 |
| 6 | 06/12/2025 | 15:19:23 | 69.98, -53.36 | 46.72 | 06/12/2025 | 15:18:33 | 70.00, -53.41 | 46.75 | 3.09 | 50 |
| 7 | 06/15/2025 | 05:54:56 | 70.29, 87.29 | 46.93 | 06/15/2025 | 05:56:07 | 70.24, 87.54 | 46.86 | 10.82 | 71 |
| 8 | 06/15/2025 | 06:45:35 | -70.07,-105.05 | 133.30 | 06/15/2025 | 06:45:38 | -70.08,-105.06 | 133.30 | 0.77 | 3 |
| 9 | 06/15/2025 | 07:36:19 | 69.93, 62.48 | 46.54 | 06/15/2025 | 07:35:06 | 69.92, 62.36 | 46.55 | 4.68 | 73 |
| 10 | 06/17/2025 | 22:11:50 | 70.14,-156.71 | 46.69 | 06/17/2025 | 22:12:40 | 70.15,-156.72 | 46.69 | 0.99 | 50 |
| 11 | 06/17/2025 | 23:02:31 | -70.03, 10.79 | 133.43 | 06/17/2025 | 23:02:10 | -70.05, 10.77 | 133.41 | 2.46 | 21 |
| 12 | 06/17/2025 | 23:52:59 | 69.03, 179.54 | 45.54 | 06/17/2025 | 23:51:53 | 69.05, 177.07 | 45.65 | 98.13 | 66 |
| 13 | 06/20/2025 | 14:28:46 | 70.10, -40.88 | 46.62 | 06/20/2025 | 14:29:12 | 70.10, -40.92 | 46.61 | 1.30 | 26 |
| 14 | 06/20/2025 | 15:19:27 | -69.98, 126.62 | 133.51 | 06/20/2025 | 15:18:42 | -70.00, 126.57 | 133.49 | 2.44 | 45 |
| 15 | 06/23/2025 | 05:55:01 | -70.41, -92.91 | 133.04 | 06/23/2025 | 05:56:13 | -70.31, -92.38 | 133.17 | 22.75 | 72 |
| 16 | 06/23/2025 | 06:45:41 | 70.07, 74.94 | 46.60 | 06/23/2025 | 06:45:42 | 70.08, 74.94 | 46.62 | 1.84 | 1 |
| 17 | 06/23/2025 | 07:36:23 | -69.99,-117.64 | 133.48 | 06/23/2025 | 07:35:12 | -69.98,-117.57 | 133.48 | 2.80 | 71 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/9/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 06/09/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9