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: 3/19/2025
| 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 | 70.13, 74.95 | 70.55 | 03/19/2025 | 06:45:56 | 70.11, 74.91 | 70.53 | 2.55 | 24 |
| 2 | 03/19/2025 | 07:36:14 | -70.04,-117.59 | 109.56 | 03/19/2025 | 07:35:25 | -70.04,-117.54 | 109.55 | 2.14 | 49 |
| 3 | 03/21/2025 | 22:11:40 | -70.20, 23.31 | 110.43 | 03/21/2025 | 22:12:52 | -70.20, 23.29 | 110.44 | 0.58 | 72 |
| 4 | 03/21/2025 | 23:02:24 | 70.10,-169.22 | 69.45 | 03/21/2025 | 23:02:19 | 70.09,-169.21 | 69.44 | 0.75 | 5 |
| 5 | 03/21/2025 | 23:53:03 | -69.84, -1.52 | 110.84 | 03/21/2025 | 23:51:50 | -69.92, -1.82 | 110.74 | 14.52 | 73 |
| 6 | 03/24/2025 | 14:28:33 | -70.18, 139.11 | 111.51 | 03/24/2025 | 14:29:15 | -70.17, 139.16 | 111.53 | 1.93 | 42 |
| 7 | 03/24/2025 | 15:19:17 | 70.08, -53.43 | 68.38 | 03/24/2025 | 15:18:42 | 70.06, -53.35 | 68.36 | 3.65 | 35 |
| 8 | 03/27/2025 | 05:54:51 | 70.66, 86.82 | 67.95 | 03/27/2025 | 05:56:01 | 70.58, 88.03 | 67.82 | 45.66 | 70 |
| 9 | 03/27/2025 | 06:45:25 | -70.12,-105.02 | 112.63 | 03/27/2025 | 06:45:37 | -70.14,-104.98 | 112.62 | 2.37 | 12 |
| 10 | 03/27/2025 | 07:36:08 | 69.98, 62.50 | 67.21 | 03/27/2025 | 07:35:05 | 69.97, 62.43 | 67.21 | 3.18 | 63 |
| 11 | 03/29/2025 | 22:11:34 | 70.15,-156.61 | 66.37 | 03/29/2025 | 22:12:29 | 70.15,-156.68 | 66.36 | 2.80 | 55 |
| 12 | 03/29/2025 | 23:02:17 | -70.09, 10.81 | 113.72 | 03/29/2025 | 23:01:58 | -70.10, 10.87 | 113.71 | 2.52 | 19 |
| 13 | 03/29/2025 | 23:52:46 | 69.21, 179.41 | 65.36 | 03/29/2025 | 23:51:38 | 69.26, 177.38 | 65.48 | 80.30 | 68 |
| 14 | 04/01/2025 | 14:28:25 | 70.14, -40.81 | 65.32 | 04/01/2025 | 14:28:47 | 70.15, -40.76 | 65.32 | 2.07 | 22 |
| 15 | 04/01/2025 | 15:19:07 | -70.02, 126.69 | 114.83 | 04/01/2025 | 15:18:17 | -70.04, 126.71 | 114.80 | 2.67 | 50 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/19/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/19/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9