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: 4/23/2025
| 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 | 04/25/2025 | 14:27:59 | -70.54, 138.68 | 122.92 | 04/25/2025 | 14:29:10 | -70.44, 139.48 | 123.04 | 31.70 | 71 |
| 2 | 04/25/2025 | 15:18:37 | 70.13, -53.37 | 56.65 | 04/25/2025 | 15:18:41 | 70.12, -53.34 | 56.63 | 1.90 | 4 |
| 3 | 04/25/2025 | 16:09:19 | -70.02, 114.12 | 123.49 | 04/25/2025 | 16:08:11 | -70.00, 114.13 | 123.49 | 1.35 | 68 |
| 4 | 04/28/2025 | 06:44:51 | -70.16,-104.97 | 124.17 | 04/28/2025 | 06:45:40 | -70.16,-105.04 | 124.18 | 2.71 | 49 |
| 5 | 04/28/2025 | 07:35:35 | 70.07, 62.48 | 55.73 | 04/28/2025 | 07:35:07 | 70.05, 62.45 | 55.71 | 2.55 | 28 |
| 6 | 04/30/2025 | 22:11:18 | 70.80,-157.56 | 55.69 | 04/30/2025 | 22:12:27 | 70.66,-156.05 | 55.50 | 57.74 | 69 |
| 7 | 04/30/2025 | 23:01:50 | -70.16, 10.78 | 125.00 | 04/30/2025 | 23:02:04 | -70.16, 10.86 | 125.00 | 2.84 | 14 |
| 8 | 04/30/2025 | 23:52:33 | 70.01, 178.32 | 54.85 | 04/30/2025 | 23:51:32 | 69.99, 178.27 | 54.83 | 2.90 | 61 |
| 9 | 05/03/2025 | 14:28:04 | 70.18, -40.81 | 54.24 | 05/03/2025 | 14:28:58 | 70.18, -40.85 | 54.24 | 1.49 | 54 |
| 10 | 05/03/2025 | 15:18:46 | -70.07, 126.68 | 125.89 | 05/03/2025 | 15:18:28 | -70.07, 126.63 | 125.88 | 2.23 | 18 |
| 11 | 05/03/2025 | 16:09:15 | 69.17, -64.70 | 53.19 | 05/03/2025 | 16:08:08 | 69.24, -66.86 | 53.30 | 85.42 | 67 |
| 12 | 05/06/2025 | 05:54:34 | -71.08, -93.82 | 125.58 | 05/06/2025 | 05:55:41 | -70.99, -91.39 | 125.73 | 88.35 | 67 |
| 13 | 05/06/2025 | 06:45:02 | 70.15, 75.00 | 53.44 | 05/06/2025 | 06:45:21 | 70.16, 75.02 | 53.45 | 1.82 | 19 |
| 14 | 05/06/2025 | 07:35:44 | -70.03,-117.51 | 126.69 | 05/06/2025 | 07:34:51 | -70.05,-117.50 | 126.67 | 2.34 | 53 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/23/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/23/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9