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: 4/12/2025
| 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 | 04/12/2025 | 06:45:04 | -70.16,-105.02 | 118.69 | 04/12/2025 | 06:45:54 | -70.19,-105.02 | 118.67 | 3.32 | 50 |
| 2 | 04/12/2025 | 07:35:48 | 70.08, 62.42 | 61.21 | 04/12/2025 | 07:35:21 | 70.09, 62.48 | 61.22 | 2.56 | 27 |
| 3 | 04/12/2025 | 08:26:13 | -69.06,-128.79 | 119.86 | 04/12/2025 | 08:25:07 | -69.10,-131.23 | 119.75 | 97.08 | 66 |
| 4 | 04/14/2025 | 23:01:55 | -70.17, 10.76 | 119.66 | 04/14/2025 | 23:02:23 | -70.17, 10.82 | 119.67 | 2.45 | 28 |
| 5 | 04/14/2025 | 23:52:38 | 70.04, 178.27 | 60.20 | 04/14/2025 | 23:51:50 | 70.06, 178.32 | 60.22 | 3.04 | 48 |
| 6 | 04/17/2025 | 14:28:07 | 70.47, -41.24 | 59.72 | 04/17/2025 | 14:29:19 | 70.37, -40.64 | 59.59 | 25.19 | 72 |
| 7 | 04/17/2025 | 15:18:44 | -70.09, 126.68 | 120.70 | 04/17/2025 | 15:18:52 | -70.09, 126.60 | 120.69 | 3.06 | 8 |
| 8 | 04/17/2025 | 16:09:28 | 70.01, -65.89 | 59.22 | 04/17/2025 | 16:08:19 | 69.98, -65.91 | 59.19 | 3.00 | 69 |
| 9 | 04/20/2025 | 06:44:52 | 70.19, 74.99 | 58.50 | 04/20/2025 | 06:45:49 | 70.19, 74.98 | 58.49 | 0.72 | 57 |
| 10 | 04/20/2025 | 07:35:34 | -70.07,-117.51 | 121.64 | 04/20/2025 | 07:35:19 | -70.08,-117.54 | 121.63 | 1.72 | 15 |
| 11 | 04/20/2025 | 08:26:04 | 69.30, 50.93 | 57.56 | 04/20/2025 | 08:24:56 | 69.36, 49.12 | 57.66 | 71.22 | 68 |
| 12 | 04/22/2025 | 23:01:41 | 70.19,-169.22 | 57.59 | 04/22/2025 | 23:02:14 | 70.18,-169.14 | 57.57 | 3.12 | 33 |
| 13 | 04/22/2025 | 23:52:23 | -70.07, -1.71 | 122.55 | 04/22/2025 | 23:51:44 | -70.08, -1.66 | 122.54 | 2.30 | 39 |
| 14 | 04/25/2025 | 14:27:56 | -70.74, 138.38 | 122.71 | 04/25/2025 | 14:29:06 | -70.62, 139.76 | 122.87 | 52.23 | 70 |
| 15 | 04/25/2025 | 15:18:30 | 70.15, -53.36 | 56.67 | 04/25/2025 | 15:18:40 | 70.12, -53.33 | 56.64 | 2.94 | 10 |
| 16 | 04/25/2025 | 16:09:12 | -70.02, 114.15 | 123.48 | 04/25/2025 | 16:08:10 | -70.02, 114.16 | 123.48 | 0.39 | 62 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/12/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/12/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9