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: 5/12/2025
| 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 | 05/14/2025 | 05:54:45 | 71.16, 86.00 | 52.42 | 05/14/2025 | 05:55:51 | 71.04, 88.63 | 52.24 | 95.64 | 66 |
| 2 | 05/14/2025 | 06:45:10 | -70.18,-105.09 | 128.61 | 05/14/2025 | 06:45:35 | -70.16,-105.06 | 128.64 | 2.85 | 25 |
| 3 | 05/14/2025 | 07:35:54 | 70.06, 62.40 | 51.26 | 05/14/2025 | 07:35:02 | 70.05, 62.44 | 51.26 | 1.36 | 52 |
| 4 | 05/16/2025 | 22:11:25 | 70.21,-156.70 | 50.81 | 05/16/2025 | 22:12:32 | 70.20,-156.75 | 50.79 | 2.61 | 67 |
| 5 | 05/16/2025 | 23:02:07 | -70.12, 10.76 | 129.29 | 05/16/2025 | 23:02:01 | -70.14, 10.80 | 129.28 | 2.06 | 6 |
| 6 | 05/16/2025 | 23:52:45 | 69.68, 178.72 | 50.25 | 05/16/2025 | 23:51:33 | 69.75, 177.91 | 50.35 | 32.51 | 72 |
| 7 | 05/19/2025 | 14:28:22 | 70.16, -40.86 | 50.18 | 05/19/2025 | 14:28:58 | 70.15, -40.93 | 50.16 | 2.98 | 36 |
| 8 | 05/19/2025 | 15:19:04 | -70.07, 126.59 | 129.93 | 05/19/2025 | 15:18:27 | -70.09, 126.62 | 129.91 | 2.36 | 37 |
| 9 | 05/22/2025 | 05:54:41 | -70.55, -93.02 | 129.96 | 05/22/2025 | 05:55:52 | -70.46, -92.23 | 130.07 | 30.94 | 71 |
| 10 | 05/22/2025 | 06:45:19 | 70.11, 74.97 | 49.58 | 05/22/2025 | 06:45:23 | 70.13, 74.94 | 49.60 | 2.62 | 4 |
| 11 | 05/22/2025 | 07:36:01 | -70.03,-117.58 | 130.51 | 05/22/2025 | 07:34:53 | -70.02,-117.59 | 130.52 | 0.69 | 68 |
| 12 | 05/24/2025 | 22:11:31 | -70.19, 23.30 | 130.83 | 05/24/2025 | 22:12:20 | -70.20, 23.29 | 130.83 | 0.93 | 49 |
| 13 | 05/24/2025 | 23:02:15 | 70.07,-169.20 | 49.04 | 05/24/2025 | 23:01:47 | 70.09,-169.23 | 49.06 | 2.27 | 28 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/12/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/12/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9