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: 7/19/2025
| 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 | 07/21/2025 | 06:20:30 | 70.11, 81.16 | 49.70 | 07/21/2025 | 06:21:10 | 70.11, 81.17 | 49.70 | 0.25 | 40 |
| 2 | 07/21/2025 | 07:11:12 | -70.02,-111.37 | 130.40 | 07/21/2025 | 07:10:40 | -70.00,-111.35 | 130.41 | 1.38 | 32 |
| 3 | 07/23/2025 | 21:46:55 | -70.91, 28.35 | 128.93 | 07/23/2025 | 21:48:03 | -70.76, 30.36 | 129.16 | 75.05 | 68 |
| 4 | 07/23/2025 | 22:37:25 | 70.07,-163.01 | 50.20 | 07/23/2025 | 22:37:41 | 70.05,-163.03 | 50.18 | 2.26 | 16 |
| 5 | 07/23/2025 | 23:28:07 | -69.97, 4.47 | 129.91 | 07/23/2025 | 23:27:11 | -69.95, 4.45 | 129.92 | 2.18 | 56 |
| 6 | 07/26/2025 | 14:03:36 | -70.13, 145.37 | 129.17 | 07/26/2025 | 14:04:44 | -70.15, 145.34 | 129.16 | 2.51 | 68 |
| 7 | 07/26/2025 | 14:54:20 | 70.03, -47.18 | 50.74 | 07/26/2025 | 14:54:11 | 70.04, -47.18 | 50.75 | 0.30 | 9 |
| 8 | 07/26/2025 | 15:44:57 | -69.66, 120.70 | 129.65 | 07/26/2025 | 15:43:45 | -69.72, 120.01 | 129.55 | 27.45 | 72 |
| 9 | 07/29/2025 | 06:20:31 | -70.14, -98.88 | 128.54 | 07/29/2025 | 06:21:13 | -70.12, -98.82 | 128.57 | 3.24 | 42 |
| 10 | 07/29/2025 | 07:11:14 | 70.00, 68.64 | 51.33 | 07/29/2025 | 07:10:40 | 70.01, 68.66 | 51.34 | 1.11 | 34 |
| 11 | 07/31/2025 | 21:46:55 | 70.81,-151.50 | 52.82 | 07/31/2025 | 21:48:03 | 70.73,-149.68 | 52.66 | 67.29 | 68 |
| 12 | 07/31/2025 | 22:37:25 | -70.05, 17.02 | 127.98 | 07/31/2025 | 22:37:43 | -70.08, 17.00 | 127.95 | 3.23 | 18 |
| 13 | 07/31/2025 | 23:28:09 | 69.97,-175.55 | 51.95 | 07/31/2025 | 23:27:10 | 69.96,-175.51 | 51.95 | 1.43 | 59 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/19/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/19/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8