Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-8 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/11/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-8) | Time (LANDSAT-8) | Lat,Lon (LANDSAT-8) | SZA (LANDSAT-8 ) | Distance(km) | Time Diff (sec) |
| 1 | 04/13/2025 | 14:03:02 | 71.02, -35.81 | 61.73 | 04/13/2025 | 14:04:09 | 70.93, -33.61 | 61.58 | 80.52 | 67 |
| 2 | 04/13/2025 | 14:53:30 | -70.16, 132.88 | 119.18 | 04/13/2025 | 14:53:51 | -70.16, 132.88 | 119.19 | 0.02 | 21 |
| 3 | 04/13/2025 | 15:44:14 | 70.08, -59.69 | 60.72 | 04/13/2025 | 15:43:18 | 70.06, -59.62 | 60.70 | 3.45 | 56 |
| 4 | 04/16/2025 | 06:19:37 | 70.25, 81.22 | 59.96 | 04/16/2025 | 06:20:48 | 70.24, 81.24 | 59.94 | 0.78 | 71 |
| 5 | 04/16/2025 | 07:10:19 | -70.12,-111.27 | 120.19 | 04/16/2025 | 07:10:18 | -70.13,-111.29 | 120.18 | 0.86 | 1 |
| 6 | 04/16/2025 | 08:01:00 | 69.89, 56.40 | 59.56 | 04/16/2025 | 07:59:47 | 69.91, 56.05 | 59.60 | 13.41 | 73 |
| 7 | 04/18/2025 | 22:36:27 | 70.22,-162.95 | 58.99 | 04/18/2025 | 22:37:15 | 70.22,-162.90 | 58.99 | 1.88 | 48 |
| 8 | 04/18/2025 | 23:27:09 | -70.10, 4.55 | 121.15 | 04/18/2025 | 23:26:45 | -70.11, 4.57 | 121.14 | 1.81 | 24 |
| 9 | 04/21/2025 | 14:53:16 | 70.16, -47.07 | 58.01 | 04/21/2025 | 14:53:42 | 70.17, -47.10 | 58.01 | 1.35 | 26 |
| 10 | 04/21/2025 | 15:43:59 | -70.09, 120.36 | 122.08 | 04/21/2025 | 15:43:12 | -70.06, 120.38 | 122.11 | 3.39 | 47 |
| 11 | 04/24/2025 | 06:19:27 | -70.50, -99.11 | 122.53 | 04/24/2025 | 06:20:38 | -70.40, -98.51 | 122.65 | 24.71 | 71 |
| 12 | 04/24/2025 | 07:10:05 | 70.11, 68.80 | 57.07 | 04/24/2025 | 07:10:08 | 70.12, 68.73 | 57.08 | 3.01 | 3 |
| 13 | 04/24/2025 | 08:00:48 | -70.04,-123.77 | 123.03 | 04/24/2025 | 07:59:38 | -70.02,-123.79 | 123.04 | 2.29 | 70 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/11/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/11/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8