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: 3/31/2025
| 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 | 04/01/2025 | 14:28:25 | 70.16, -40.84 | 65.34 | 04/01/2025 | 14:29:20 | 70.19, -40.85 | 65.36 | 3.31 | 55 |
| 2 | 04/01/2025 | 15:19:07 | -70.05, 126.65 | 114.80 | 04/01/2025 | 15:18:50 | -70.08, 126.62 | 114.77 | 3.11 | 17 |
| 3 | 04/01/2025 | 16:09:37 | 69.22, -64.82 | 64.33 | 04/01/2025 | 16:08:30 | 69.25, -66.86 | 64.43 | 80.48 | 67 |
| 4 | 04/04/2025 | 06:45:16 | 70.11, 75.02 | 64.26 | 04/04/2025 | 06:45:47 | 70.14, 74.96 | 64.27 | 3.30 | 31 |
| 5 | 04/04/2025 | 07:35:59 | -70.05,-117.57 | 115.83 | 04/04/2025 | 07:35:17 | -70.02,-117.57 | 115.85 | 3.00 | 42 |
| 6 | 04/06/2025 | 22:11:31 | -70.58, 22.76 | 116.27 | 04/06/2025 | 22:12:42 | -70.42, 23.61 | 116.46 | 36.27 | 71 |
| 7 | 04/06/2025 | 23:02:07 | 70.08,-169.15 | 63.20 | 04/06/2025 | 23:02:13 | 70.09,-169.22 | 63.21 | 2.94 | 6 |
| 8 | 04/06/2025 | 23:52:50 | -70.01, -1.73 | 116.89 | 04/06/2025 | 23:51:42 | -70.03, -1.66 | 116.86 | 3.55 | 68 |
| 9 | 04/09/2025 | 14:28:14 | -70.19, 139.17 | 117.68 | 04/09/2025 | 14:29:10 | -70.17, 139.14 | 117.71 | 2.31 | 56 |
| 10 | 04/09/2025 | 15:18:57 | 70.06, -53.33 | 62.18 | 04/09/2025 | 15:18:37 | 70.05, -53.38 | 62.17 | 2.05 | 20 |
| 11 | 04/09/2025 | 16:09:27 | -69.30, 115.10 | 118.63 | 04/09/2025 | 16:08:18 | -69.34, 113.28 | 118.53 | 71.67 | 69 |
| 12 | 04/12/2025 | 06:45:04 | -70.12,-104.95 | 118.74 | 04/12/2025 | 06:45:34 | -70.14,-105.00 | 118.72 | 3.10 | 30 |
| 13 | 04/12/2025 | 07:35:48 | 70.05, 62.47 | 61.18 | 04/12/2025 | 07:35:01 | 70.02, 62.48 | 61.15 | 2.92 | 47 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/31/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/31/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9