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: 3/18/2025
| 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 | 03/19/2025 | 06:45:32 | 70.16, 74.91 | 70.58 | 03/19/2025 | 06:45:55 | 70.14, 74.96 | 70.55 | 2.71 | 23 |
| 2 | 03/19/2025 | 07:36:13 | -70.01,-117.55 | 109.59 | 03/19/2025 | 07:35:25 | -70.02,-117.58 | 109.58 | 1.43 | 48 |
| 3 | 03/21/2025 | 22:11:41 | -70.23, 23.27 | 110.40 | 03/21/2025 | 22:12:52 | -70.23, 23.34 | 110.42 | 2.69 | 71 |
| 4 | 03/21/2025 | 23:02:24 | 70.07,-169.19 | 69.42 | 03/21/2025 | 23:02:20 | 70.06,-169.25 | 69.42 | 2.52 | 4 |
| 5 | 03/21/2025 | 23:53:04 | -69.86, -1.56 | 110.81 | 03/21/2025 | 23:51:51 | -69.89, -1.85 | 110.76 | 11.81 | 73 |
| 6 | 03/24/2025 | 14:28:33 | -70.15, 139.16 | 111.54 | 03/24/2025 | 14:29:16 | -70.15, 139.13 | 111.55 | 1.18 | 43 |
| 7 | 03/24/2025 | 15:19:17 | 70.06, -53.39 | 68.35 | 03/24/2025 | 15:18:43 | 70.04, -53.39 | 68.33 | 2.13 | 34 |
| 8 | 03/27/2025 | 05:54:51 | 70.68, 86.77 | 67.98 | 03/27/2025 | 05:56:01 | 70.55, 87.99 | 67.80 | 47.24 | 70 |
| 9 | 03/27/2025 | 06:45:24 | -70.10,-104.98 | 112.66 | 03/27/2025 | 06:45:37 | -70.11,-105.01 | 112.64 | 2.27 | 13 |
| 10 | 03/27/2025 | 07:36:08 | 70.01, 62.46 | 67.24 | 03/27/2025 | 07:35:04 | 70.00, 62.47 | 67.24 | 1.01 | 64 |
| 11 | 03/29/2025 | 22:11:34 | 70.18,-156.65 | 66.40 | 03/29/2025 | 22:12:28 | 70.18,-156.64 | 66.39 | 0.26 | 54 |
| 12 | 03/29/2025 | 23:02:16 | -70.06, 10.85 | 113.74 | 03/29/2025 | 23:01:58 | -70.07, 10.83 | 113.73 | 1.12 | 18 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/18/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/18/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9