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: 9/8/2025
| 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 | 09/09/2025 | 22:37:19 | 70.08,-163.00 | 65.06 | 09/09/2025 | 22:37:55 | 70.06,-163.04 | 65.04 | 2.79 | 36 |
| 2 | 09/09/2025 | 23:28:01 | -69.99, 4.47 | 115.03 | 09/09/2025 | 23:27:24 | -70.00, 4.51 | 115.01 | 2.38 | 37 |
| 3 | 09/12/2025 | 14:03:39 | -70.73, 144.45 | 113.28 | 09/12/2025 | 14:04:48 | -70.63, 146.04 | 113.40 | 59.42 | 69 |
| 4 | 09/12/2025 | 14:54:12 | 70.04, -47.16 | 66.03 | 09/12/2025 | 14:54:24 | 70.04, -47.18 | 66.03 | 0.97 | 12 |
| 5 | 09/12/2025 | 15:44:54 | -69.95, 120.30 | 114.05 | 09/12/2025 | 15:43:54 | -69.93, 120.29 | 114.07 | 1.97 | 60 |
| 6 | 09/15/2025 | 06:20:21 | -70.12, -98.80 | 112.88 | 09/15/2025 | 06:21:26 | -70.11, -98.85 | 112.90 | 1.92 | 65 |
| 7 | 09/15/2025 | 07:11:05 | 70.00, 68.67 | 67.02 | 09/15/2025 | 07:10:53 | 70.00, 68.65 | 67.01 | 1.26 | 12 |
| 8 | 09/15/2025 | 08:01:40 | -69.54,-123.32 | 113.44 | 09/15/2025 | 08:00:29 | -69.56,-124.33 | 113.41 | 39.04 | 71 |
| 9 | 09/17/2025 | 22:37:13 | -70.09, 17.02 | 111.88 | 09/17/2025 | 22:37:53 | -70.10, 17.04 | 111.87 | 1.81 | 40 |
| 10 | 09/17/2025 | 23:27:57 | 69.98,-175.51 | 68.02 | 09/17/2025 | 23:27:20 | 69.99,-175.48 | 68.04 | 2.09 | 37 |
| 11 | 09/20/2025 | 14:03:34 | 70.68, -35.46 | 69.76 | 09/20/2025 | 14:04:43 | 70.62, -33.95 | 69.67 | 56.30 | 69 |
| 12 | 09/20/2025 | 14:54:06 | -70.07, 132.83 | 110.87 | 09/20/2025 | 14:54:21 | -70.08, 132.89 | 110.86 | 2.75 | 15 |
| 13 | 09/20/2025 | 15:44:50 | 69.95, -59.69 | 69.04 | 09/20/2025 | 15:43:48 | 69.97, -59.62 | 69.05 | 2.90 | 62 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/8/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/08/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8