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: 10/2/2025
| 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 | 10/05/2025 | 06:45:26 | -70.12,-105.08 | 105.14 | 10/05/2025 | 06:46:15 | -70.12,-105.00 | 105.13 | 3.01 | 49 |
| 2 | 10/05/2025 | 07:36:10 | 69.97, 62.45 | 74.74 | 10/05/2025 | 07:35:43 | 69.96, 62.42 | 74.73 | 1.60 | 27 |
| 3 | 10/05/2025 | 08:26:34 | -68.96,-128.77 | 106.27 | 10/05/2025 | 08:25:28 | -69.02,-131.21 | 106.20 | 97.43 | 66 |
| 4 | 10/07/2025 | 22:11:52 | 71.02,-158.07 | 76.80 | 10/07/2025 | 22:12:58 | 70.92,-155.55 | 76.69 | 92.11 | 66 |
| 5 | 10/07/2025 | 23:02:17 | -70.07, 10.78 | 104.16 | 10/07/2025 | 23:02:42 | -70.04, 10.78 | 104.19 | 2.99 | 25 |
| 6 | 10/07/2025 | 23:53:01 | 69.93, 178.30 | 75.72 | 10/07/2025 | 23:52:09 | 69.93, 178.27 | 75.72 | 1.27 | 52 |
| 7 | 10/10/2025 | 14:28:26 | 70.10, -40.79 | 76.88 | 10/10/2025 | 14:29:37 | 70.12, -40.84 | 76.90 | 3.03 | 71 |
| 8 | 10/10/2025 | 15:19:08 | -70.04, 126.62 | 103.18 | 10/10/2025 | 15:19:07 | -70.01, 126.64 | 103.20 | 2.90 | 1 |
| 9 | 10/10/2025 | 16:09:49 | 69.74, -65.63 | 76.54 | 10/10/2025 | 16:08:36 | 69.79, -66.03 | 76.59 | 16.42 | 73 |
| 10 | 10/13/2025 | 06:45:16 | 70.08, 75.02 | 77.87 | 10/13/2025 | 06:46:00 | 70.08, 75.01 | 77.87 | 0.32 | 44 |
| 11 | 10/13/2025 | 07:35:57 | -69.97,-117.48 | 102.24 | 10/13/2025 | 07:35:30 | -69.98,-117.50 | 102.23 | 1.41 | 27 |
| 12 | 10/15/2025 | 22:11:37 | -70.95, 22.12 | 100.29 | 10/15/2025 | 22:12:44 | -70.82, 24.36 | 100.42 | 83.07 | 67 |
| 13 | 10/15/2025 | 23:02:06 | 70.03,-169.11 | 78.80 | 10/15/2025 | 23:02:23 | 70.04,-169.13 | 78.82 | 2.03 | 17 |
| 14 | 10/15/2025 | 23:52:48 | -69.96, -1.69 | 101.25 | 10/15/2025 | 23:51:53 | -69.94, -1.65 | 101.28 | 3.12 | 55 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/2/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 10/02/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9