Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between GOES-18 and NOAA-21 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/19/2025
| Index | Date | Time (GOES-18) | GOES-18 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 09/19/2025 | 22:31:03 | 0.02,-137.01 | 0.22,-136.20 | 92.99 | 80 |
| 2 | 09/22/2025 | 10:34:05 | -0.02,-137.00 | -0.05,-136.93 | 8.40 | 80 |
| 3 | 09/24/2025 | 22:34:35 | 0.02,-137.00 | -0.10,-137.69 | 78.63 | 80 |
| 4 | 09/25/2025 | 22:15:48 | 0.00,-136.99 | 0.84,-133.14 | 438.00 | 80 |
| 5 | 09/27/2025 | 10:40:16 | 0.01,-136.97 | 0.32,-138.41 | 164.70 | 80 |
| 6 | 09/28/2025 | 10:18:50 | 0.01,-136.95 | -0.69,-133.88 | 350.73 | 80 |
| 7 | 09/29/2025 | 22:40:45 | -0.01,-136.94 | -0.52,-139.17 | 254.01 | 80 |
| 8 | 09/30/2025 | 22:24:39 | -0.00,-136.93 | 0.49,-134.63 | 261.06 | 80 |
| 9 | 10/02/2025 | 10:46:26 | 0.00,-136.89 | 0.67,-139.90 | 342.98 | 80 |
| 10 | 10/03/2025 | 10:25:01 | -0.00,-136.87 | -0.35,-135.37 | 171.71 | 80 |
Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/19/2025
Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 09/19/2025 in txt file.
Historical Predications of SNOs between GOES-18 and NOAA-21