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: 4/23/2026
| 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 | 04/23/2026 | 05:55:40 | -70.35, -92.49 | 122.28 | 04/23/2026 | 05:56:18 | -70.33, -92.48 | 122.30 | 1.98 | 38 |
| 2 | 04/23/2026 | 06:46:23 | 70.21, 75.04 | 57.57 | 04/23/2026 | 06:45:45 | 70.24, 75.03 | 57.60 | 2.91 | 38 |
| 3 | 04/25/2026 | 21:22:01 | 70.92,-144.96 | 57.46 | 04/25/2026 | 21:23:10 | 70.78,-143.56 | 57.28 | 53.58 | 69 |
| 4 | 04/25/2026 | 22:12:33 | -70.28, 23.39 | 123.23 | 04/25/2026 | 22:12:47 | -70.28, 23.33 | 123.23 | 2.45 | 14 |
| 5 | 04/25/2026 | 23:03:17 | 70.19,-169.17 | 56.68 | 04/25/2026 | 23:02:14 | 70.18,-169.17 | 56.67 | 1.16 | 63 |
| 6 | 04/28/2026 | 13:38:44 | 70.39, -28.33 | 56.04 | 04/28/2026 | 13:39:44 | 70.39, -28.27 | 56.04 | 2.21 | 60 |
| 7 | 04/28/2026 | 14:29:26 | -70.26, 139.18 | 124.10 | 04/28/2026 | 14:29:14 | -70.27, 139.20 | 124.09 | 1.66 | 12 |
| 8 | 04/28/2026 | 15:19:59 | 69.60, -52.51 | 55.21 | 04/28/2026 | 15:18:50 | 69.68, -54.00 | 55.32 | 58.12 | 69 |
| 9 | 05/01/2026 | 05:55:37 | 70.33, 87.54 | 55.16 | 05/01/2026 | 05:56:13 | 70.31, 87.49 | 55.14 | 2.25 | 36 |
| 10 | 05/01/2026 | 06:46:20 | -70.25,-105.03 | 124.94 | 05/01/2026 | 06:45:42 | -70.25,-104.95 | 124.93 | 3.02 | 38 |
| 11 | 05/03/2026 | 21:21:57 | -70.92, 35.03 | 125.02 | 05/03/2026 | 21:23:06 | -70.82, 36.48 | 125.16 | 54.03 | 69 |
| 12 | 05/03/2026 | 22:12:30 | 70.27,-156.61 | 54.30 | 05/03/2026 | 22:12:41 | 70.27,-156.68 | 54.30 | 2.72 | 11 |
| 13 | 05/03/2026 | 23:03:13 | -70.19, 10.82 | 125.79 | 05/03/2026 | 23:02:11 | -70.16, 10.80 | 125.82 | 3.21 | 62 |
| 14 | 05/06/2026 | 13:38:41 | -70.39, 151.65 | 126.33 | 05/06/2026 | 13:39:41 | -70.39, 151.72 | 126.34 | 2.73 | 60 |
| 15 | 05/06/2026 | 14:29:24 | 70.27, -40.84 | 53.54 | 05/06/2026 | 14:29:08 | 70.28, -40.79 | 53.54 | 1.98 | 16 |
| 16 | 05/06/2026 | 15:19:57 | -69.66, 127.39 | 127.10 | 05/06/2026 | 15:18:47 | -69.68, 126.00 | 127.05 | 53.66 | 70 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/23/2026
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/23/2026 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9