Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/15/2025
Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
1 | 07/17/2025 | 05:55:10 | 70.28, 87.25 | 49.14 | 07/17/2025 | 05:56:21 | 70.23, 87.53 | 49.07 | 12.14 | 71 |
2 | 07/17/2025 | 06:45:50 | -70.09,-105.13 | 131.06 | 07/17/2025 | 06:45:52 | -70.07,-105.06 | 131.08 | 2.94 | 2 |
3 | 07/17/2025 | 07:36:33 | 69.92, 62.44 | 48.77 | 07/17/2025 | 07:35:20 | 69.91, 62.35 | 48.77 | 3.25 | 73 |
4 | 07/19/2025 | 22:12:03 | 70.13,-156.75 | 49.46 | 07/19/2025 | 22:12:54 | 70.11,-156.77 | 49.43 | 2.58 | 51 |
5 | 07/19/2025 | 23:02:45 | -70.03, 10.72 | 130.64 | 07/19/2025 | 23:02:24 | -70.00, 10.72 | 130.66 | 2.86 | 21 |
6 | 07/19/2025 | 23:53:12 | 69.02, 179.50 | 48.31 | 07/19/2025 | 23:52:06 | 69.06, 177.10 | 48.46 | 95.70 | 66 |
7 | 07/22/2025 | 14:28:57 | 70.08, -40.91 | 49.94 | 07/22/2025 | 14:29:24 | 70.08, -40.93 | 49.93 | 1.09 | 27 |
8 | 07/22/2025 | 15:19:39 | -69.98, 126.57 | 130.17 | 07/22/2025 | 15:18:54 | -69.98, 126.56 | 130.16 | 0.29 | 45 |
9 | 07/25/2025 | 05:55:13 | -70.40, -92.94 | 129.18 | 07/25/2025 | 05:56:25 | -70.31, -92.35 | 129.30 | 23.77 | 72 |
10 | 07/25/2025 | 06:45:52 | 70.04, 74.92 | 50.46 | 07/25/2025 | 06:45:55 | 70.03, 74.89 | 50.45 | 1.66 | 3 |
11 | 07/25/2025 | 07:36:34 | -69.93,-117.59 | 129.66 | 07/25/2025 | 07:35:25 | -69.94,-117.62 | 129.64 | 1.29 | 69 |
12 | 07/27/2025 | 22:12:04 | -70.14, 23.23 | 128.85 | 07/27/2025 | 22:12:58 | -70.15, 23.29 | 128.85 | 2.47 | 54 |
13 | 07/27/2025 | 23:02:47 | 70.01,-169.25 | 51.02 | 07/27/2025 | 23:02:25 | 70.03,-169.24 | 51.04 | 2.91 | 22 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/15/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/15/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9