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: 7/10/2025
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 | 07/10/2025 | 14:03:31 | -70.15, 145.35 | 132.01 | 07/10/2025 | 14:04:36 | -70.14, 145.33 | 132.04 | 2.05 | 65 |
2 | 07/10/2025 | 14:54:15 | 70.03, -47.15 | 47.87 | 07/10/2025 | 14:54:03 | 70.04, -47.17 | 47.88 | 1.36 | 12 |
3 | 07/10/2025 | 15:44:50 | -69.58, 120.84 | 132.60 | 07/10/2025 | 15:43:38 | -69.65, 119.92 | 132.49 | 36.27 | 72 |
4 | 07/13/2025 | 06:20:27 | -70.14, -98.87 | 131.65 | 07/13/2025 | 06:21:07 | -70.14, -98.80 | 131.66 | 2.61 | 40 |
5 | 07/13/2025 | 07:11:11 | 70.02, 68.63 | 48.24 | 07/13/2025 | 07:10:34 | 70.03, 68.70 | 48.25 | 2.95 | 37 |
6 | 07/15/2025 | 21:46:51 | 70.75,-151.39 | 49.42 | 07/15/2025 | 21:48:00 | 70.67,-149.78 | 49.26 | 60.02 | 69 |
7 | 07/15/2025 | 22:37:22 | -70.08, 17.00 | 131.29 | 07/15/2025 | 22:37:39 | -70.07, 16.98 | 131.31 | 1.20 | 17 |
8 | 07/15/2025 | 23:28:06 | 69.97,-175.52 | 48.60 | 07/15/2025 | 23:27:06 | 69.96,-175.53 | 48.60 | 0.74 | 60 |
9 | 07/18/2025 | 14:03:35 | 70.12, -34.62 | 49.21 | 07/18/2025 | 14:04:40 | 70.14, -34.67 | 49.22 | 3.15 | 65 |
10 | 07/18/2025 | 14:54:17 | -70.02, 132.85 | 130.90 | 07/18/2025 | 14:54:10 | -70.04, 132.82 | 130.87 | 2.94 | 7 |
11 | 07/18/2025 | 15:44:54 | 69.54, -59.13 | 48.61 | 07/18/2025 | 15:43:43 | 69.60, -60.15 | 48.72 | 40.11 | 71 |
12 | 07/21/2025 | 06:20:30 | 70.12, 81.15 | 49.71 | 07/21/2025 | 06:21:10 | 70.10, 81.15 | 49.68 | 2.50 | 40 |
13 | 07/21/2025 | 07:11:12 | -70.01,-111.37 | 130.40 | 07/21/2025 | 07:10:40 | -70.00,-111.36 | 130.41 | 1.39 | 32 |
14 | 07/23/2025 | 21:46:55 | -70.90, 28.36 | 128.93 | 07/23/2025 | 21:48:03 | -70.76, 30.36 | 129.16 | 74.58 | 68 |
15 | 07/23/2025 | 22:37:25 | 70.07,-163.01 | 50.20 | 07/23/2025 | 22:37:40 | 70.10,-162.97 | 50.22 | 3.20 | 15 |
16 | 07/23/2025 | 23:28:07 | -69.96, 4.48 | 129.91 | 07/23/2025 | 23:27:11 | -69.95, 4.45 | 129.92 | 1.60 | 56 |
Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/10/2025
Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/10/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-8