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: 4/13/2025
| 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 | 71.04, -35.86 | 61.75 | 04/13/2025 | 14:04:09 | 70.90, -33.66 | 61.55 | 81.27 | 67 |
| 2 | 04/13/2025 | 14:53:30 | -70.19, 132.84 | 119.16 | 04/13/2025 | 14:53:50 | -70.18, 132.91 | 119.17 | 2.81 | 20 |
| 3 | 04/13/2025 | 15:44:13 | 70.05, -59.64 | 60.69 | 04/13/2025 | 15:43:18 | 70.03, -59.67 | 60.67 | 3.15 | 55 |
| 4 | 04/16/2025 | 06:19:38 | 70.27, 81.18 | 59.99 | 04/16/2025 | 06:20:48 | 70.25, 81.26 | 59.96 | 3.48 | 70 |
| 5 | 04/16/2025 | 07:10:20 | -70.15,-111.32 | 120.16 | 04/16/2025 | 07:10:18 | -70.14,-111.27 | 120.17 | 2.21 | 2 |
| 6 | 04/16/2025 | 08:01:00 | 69.86, 56.44 | 59.53 | 04/16/2025 | 07:59:47 | 69.92, 56.07 | 59.61 | 15.72 | 73 |
| 7 | 04/18/2025 | 22:36:27 | 70.20,-162.91 | 58.97 | 04/18/2025 | 22:37:15 | 70.22,-162.91 | 58.98 | 2.11 | 48 |
| 8 | 04/18/2025 | 23:27:10 | -70.13, 4.51 | 121.12 | 04/18/2025 | 23:26:45 | -70.10, 4.56 | 121.15 | 3.32 | 25 |
| 9 | 04/21/2025 | 14:53:16 | 70.19, -47.11 | 58.04 | 04/21/2025 | 14:53:40 | 70.19, -47.06 | 58.03 | 1.76 | 24 |
| 10 | 04/21/2025 | 15:43:58 | -70.06, 120.40 | 122.11 | 04/21/2025 | 15:43:10 | -70.08, 120.41 | 122.09 | 1.62 | 48 |
| 11 | 04/24/2025 | 06:19:25 | -70.42, -99.00 | 122.60 | 04/24/2025 | 06:20:37 | -70.34, -98.60 | 122.71 | 17.60 | 72 |
| 12 | 04/24/2025 | 07:10:05 | 70.14, 68.76 | 57.10 | 04/24/2025 | 07:10:06 | 70.11, 68.72 | 57.07 | 3.18 | 1 |
| 13 | 04/24/2025 | 08:00:47 | -70.02,-123.74 | 123.05 | 04/24/2025 | 07:59:36 | -70.01,-123.80 | 123.05 | 2.43 | 71 |
| 14 | 04/26/2025 | 22:36:11 | -70.23, 17.10 | 123.67 | 04/26/2025 | 22:37:03 | -70.22, 17.12 | 123.69 | 1.48 | 52 |
| 15 | 04/26/2025 | 23:26:54 | 70.11,-175.40 | 56.19 | 04/26/2025 | 23:26:30 | 70.11,-175.40 | 56.19 | 0.20 | 24 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/13/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/13/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8