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: 9/4/2025
| 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 | 09/07/2025 | 06:20:26 | 70.09, 81.22 | 64.06 | 09/07/2025 | 06:21:26 | 70.10, 81.14 | 64.08 | 3.43 | 60 |
| 2 | 09/07/2025 | 07:11:08 | -69.99,-111.31 | 116.03 | 09/07/2025 | 07:10:56 | -69.99,-111.38 | 116.03 | 2.80 | 12 |
| 3 | 09/07/2025 | 08:01:41 | 69.30, 57.00 | 63.28 | 09/07/2025 | 08:00:32 | 69.39, 55.44 | 63.41 | 62.24 | 69 |
| 4 | 09/09/2025 | 22:37:19 | 70.10,-163.02 | 65.08 | 09/09/2025 | 22:37:54 | 70.09,-162.99 | 65.07 | 1.14 | 35 |
| 5 | 09/09/2025 | 23:28:01 | -69.99, 4.45 | 115.02 | 09/09/2025 | 23:27:24 | -69.98, 4.49 | 115.03 | 1.99 | 37 |
| 6 | 09/12/2025 | 14:03:39 | -70.74, 144.43 | 113.26 | 09/12/2025 | 14:04:48 | -70.59, 145.98 | 113.44 | 59.63 | 69 |
| 7 | 09/12/2025 | 14:54:12 | 70.06, -47.19 | 66.05 | 09/12/2025 | 14:54:23 | 70.05, -47.17 | 66.04 | 1.65 | 11 |
| 8 | 09/12/2025 | 15:44:54 | -69.96, 120.28 | 114.04 | 09/12/2025 | 15:43:53 | -69.94, 120.31 | 114.06 | 2.73 | 61 |
| 9 | 09/15/2025 | 06:20:21 | -70.14, -98.84 | 112.86 | 09/15/2025 | 06:21:24 | -70.14, -98.80 | 112.87 | 1.61 | 63 |
| 10 | 09/15/2025 | 07:11:05 | 70.03, 68.63 | 67.05 | 09/15/2025 | 07:10:51 | 70.02, 68.69 | 67.04 | 2.47 | 14 |
| 11 | 09/15/2025 | 08:01:39 | -69.51,-123.28 | 113.47 | 09/15/2025 | 08:00:28 | -69.53,-124.36 | 113.43 | 41.90 | 71 |
| 12 | 09/17/2025 | 22:37:13 | -70.07, 17.04 | 111.90 | 09/17/2025 | 22:37:52 | -70.08, 17.02 | 111.89 | 1.55 | 39 |
| 13 | 09/17/2025 | 23:27:57 | 69.96,-175.48 | 68.01 | 09/17/2025 | 23:27:19 | 69.97,-175.50 | 68.01 | 0.72 | 38 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/4/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 09/04/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8