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: 4/25/2025
| 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 | -70.55, 138.66 | 122.91 | 04/25/2025 | 14:29:10 | -70.43, 139.46 | 123.06 | 32.78 | 71 |
| 2 | 04/25/2025 | 15:18:36 | 70.09, -53.30 | 56.60 | 04/25/2025 | 15:18:41 | 70.11, -53.36 | 56.62 | 2.98 | 5 |
| 3 | 04/25/2025 | 16:09:18 | -69.98, 114.19 | 123.53 | 04/25/2025 | 16:08:11 | -69.99, 114.11 | 123.51 | 3.41 | 67 |
| 4 | 04/28/2025 | 06:44:51 | -70.17,-104.99 | 124.16 | 04/28/2025 | 06:45:39 | -70.19,-104.99 | 124.14 | 2.11 | 48 |
| 5 | 04/28/2025 | 07:35:35 | 70.08, 62.47 | 55.74 | 04/28/2025 | 07:35:06 | 70.09, 62.50 | 55.75 | 1.68 | 29 |
| 6 | 04/30/2025 | 22:11:17 | 70.76,-157.48 | 55.64 | 04/30/2025 | 22:12:26 | 70.69,-156.00 | 55.53 | 55.05 | 69 |
| 7 | 04/30/2025 | 23:01:49 | -70.12, 10.85 | 125.04 | 04/30/2025 | 23:02:04 | -70.14, 10.82 | 125.03 | 1.93 | 15 |
| 8 | 04/30/2025 | 23:52:33 | 70.02, 178.30 | 54.86 | 04/30/2025 | 23:51:31 | 70.03, 178.31 | 54.86 | 0.37 | 62 |
| 9 | 05/03/2025 | 14:28:04 | 70.19, -40.82 | 54.25 | 05/03/2025 | 14:28:57 | 70.20, -40.82 | 54.26 | 1.46 | 53 |
| 10 | 05/03/2025 | 15:18:46 | -70.08, 126.67 | 125.88 | 05/03/2025 | 15:18:27 | -70.09, 126.66 | 125.86 | 1.70 | 19 |
| 11 | 05/03/2025 | 16:09:15 | 69.18, -64.71 | 53.20 | 05/03/2025 | 16:08:08 | 69.20, -66.90 | 53.27 | 86.45 | 67 |
| 12 | 05/06/2025 | 05:54:34 | -71.09, -93.84 | 125.57 | 05/06/2025 | 05:55:40 | -70.99, -91.38 | 125.72 | 89.50 | 66 |
| 13 | 05/06/2025 | 06:45:02 | 70.16, 74.99 | 53.45 | 05/06/2025 | 06:45:20 | 70.17, 75.04 | 53.46 | 2.66 | 18 |
| 14 | 05/06/2025 | 07:35:44 | -70.04,-117.53 | 126.68 | 05/06/2025 | 07:34:50 | -70.06,-117.48 | 126.66 | 2.61 | 54 |
| 15 | 05/08/2025 | 22:11:16 | -70.23, 23.32 | 127.20 | 05/08/2025 | 22:12:16 | -70.22, 23.36 | 127.22 | 2.32 | 60 |
| 16 | 05/08/2025 | 23:01:59 | 70.08,-169.14 | 52.64 | 05/08/2025 | 23:01:43 | 70.10,-169.16 | 52.66 | 2.36 | 16 |
| 17 | 05/08/2025 | 23:52:31 | -69.44, -0.88 | 128.03 | 05/08/2025 | 23:51:22 | -69.50, -2.36 | 127.94 | 58.05 | 69 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/25/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/25/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9