Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-20 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/16/2025
| Index | Date (NOAA-20) | Time (NOAA-20) | Lat,Lon (NOAA-20) | SZA (NOAA-20 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 04/16/2025 | 07:59:17 | -70.01,-123.78 | 120.30 | 04/16/2025 | 08:00:06 | -70.02,-123.81 | 120.30 | 1.18 | 49 |
| 2 | 04/16/2025 | 08:50:02 | 69.94, 43.64 | 59.61 | 04/16/2025 | 08:49:33 | 69.92, 43.69 | 59.59 | 3.14 | 29 |
| 3 | 04/18/2025 | 23:25:46 | 70.74,-176.49 | 59.53 | 04/18/2025 | 23:26:54 | 70.64,-174.66 | 59.38 | 68.11 | 68 |
| 4 | 04/19/2025 | 00:16:15 | -69.96, -7.95 | 121.29 | 04/19/2025 | 00:16:34 | -69.98, -7.99 | 121.28 | 1.89 | 19 |
| 5 | 04/19/2025 | 01:06:59 | 69.84, 159.54 | 58.57 | 04/19/2025 | 01:06:01 | 69.87, 159.51 | 58.61 | 3.28 | 58 |
| 6 | 04/21/2025 | 15:42:31 | 70.08, -59.68 | 57.92 | 04/21/2025 | 15:43:30 | 70.05, -59.63 | 57.89 | 3.25 | 59 |
| 7 | 04/21/2025 | 16:33:12 | -69.93, 107.86 | 122.25 | 04/21/2025 | 16:33:00 | -69.94, 107.85 | 122.23 | 1.65 | 12 |
| 8 | 04/21/2025 | 17:23:46 | 69.28, -83.88 | 57.08 | 04/21/2025 | 17:22:36 | 69.33, -85.33 | 57.17 | 57.16 | 70 |
| 9 | 04/24/2025 | 07:59:28 | 70.00, 56.19 | 56.95 | 04/24/2025 | 07:59:56 | 70.02, 56.22 | 56.97 | 2.43 | 28 |
| 10 | 04/24/2025 | 08:50:10 | -69.90,-136.34 | 123.17 | 04/24/2025 | 08:49:26 | -69.92,-136.30 | 123.15 | 2.21 | 44 |
| 11 | 04/26/2025 | 23:25:43 | -70.15, 4.41 | 123.75 | 04/26/2025 | 23:26:54 | -70.12, 4.60 | 123.80 | 8.18 | 71 |
| 12 | 04/27/2025 | 00:16:25 | 69.95, 172.04 | 56.02 | 04/27/2025 | 00:16:22 | 69.95, 172.01 | 56.03 | 1.28 | 3 |
| 13 | 04/27/2025 | 01:07:06 | -69.79, -20.41 | 124.16 | 04/27/2025 | 01:05:53 | -69.79, -20.58 | 124.14 | 6.76 | 73 |
| 14 | 04/29/2025 | 15:42:39 | -70.05, 120.33 | 124.70 | 04/29/2025 | 15:43:19 | -70.06, 120.41 | 124.70 | 2.88 | 40 |
| 15 | 04/29/2025 | 16:33:22 | 69.90, -72.13 | 55.13 | 04/29/2025 | 16:32:47 | 69.88, -72.19 | 55.12 | 3.05 | 35 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/16/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 04/16/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9