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: 3/17/2025
| 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 | 03/19/2025 | 06:45:32 | 70.12, 74.96 | 70.54 | 03/19/2025 | 06:45:56 | 70.12, 74.93 | 70.54 | 1.21 | 24 |
| 2 | 03/19/2025 | 07:36:14 | -70.03,-117.58 | 109.58 | 03/19/2025 | 07:35:26 | -70.00,-117.60 | 109.59 | 2.52 | 48 |
| 3 | 03/21/2025 | 22:11:41 | -70.24, 23.25 | 110.39 | 03/21/2025 | 22:12:52 | -70.22, 23.32 | 110.42 | 3.33 | 71 |
| 4 | 03/21/2025 | 23:02:24 | 70.08,-169.20 | 69.44 | 03/21/2025 | 23:02:19 | 70.11,-169.19 | 69.46 | 3.35 | 5 |
| 5 | 03/21/2025 | 23:53:04 | -69.87, -1.57 | 110.80 | 03/21/2025 | 23:51:50 | -69.94, -1.79 | 110.72 | 11.15 | 74 |
| 6 | 03/24/2025 | 14:28:33 | -70.15, 139.15 | 111.54 | 03/24/2025 | 14:29:16 | -70.15, 139.13 | 111.55 | 0.92 | 43 |
| 7 | 03/24/2025 | 15:19:17 | 70.06, -53.39 | 68.35 | 03/24/2025 | 15:18:43 | 70.04, -53.39 | 68.33 | 2.20 | 34 |
| 8 | 03/27/2025 | 05:54:52 | 70.68, 86.79 | 67.97 | 03/27/2025 | 05:56:02 | 70.57, 88.02 | 67.82 | 46.84 | 70 |
| 9 | 03/27/2025 | 06:45:26 | -70.14,-105.05 | 112.61 | 03/27/2025 | 06:45:38 | -70.13,-104.99 | 112.63 | 2.36 | 12 |
| 10 | 03/27/2025 | 07:36:09 | 70.00, 62.47 | 67.23 | 03/27/2025 | 07:35:05 | 70.02, 62.49 | 67.25 | 1.92 | 64 |
| 11 | 03/29/2025 | 22:11:35 | 70.16,-156.62 | 66.38 | 03/29/2025 | 22:12:30 | 70.16,-156.67 | 66.37 | 2.17 | 55 |
| 12 | 03/29/2025 | 23:02:17 | -70.04, 10.88 | 113.77 | 03/29/2025 | 23:02:00 | -70.05, 10.80 | 113.75 | 3.35 | 17 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/17/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/17/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9