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: 10/20/2025
| Index | Date | Time (GOES-18) | GOES-18 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 10/20/2025 | 22:49:13 | 0.02,-137.01 | -0.80,-140.56 | 405.04 | 80 |
| 2 | 10/21/2025 | 22:27:47 | 0.01,-137.01 | 0.26,-136.03 | 112.57 | 80 |
| 3 | 10/23/2025 | 10:52:11 | 0.00,-137.00 | 0.96,-141.27 | 487.09 | 80 |
| 4 | 10/24/2025 | 10:30:45 | 0.00,-137.00 | -0.05,-136.73 | 29.72 | 80 |
| 5 | 10/26/2025 | 22:36:33 | -0.01,-136.99 | -0.13,-137.49 | 57.43 | 80 |
| 6 | 10/27/2025 | 22:15:06 | -0.00,-136.98 | 0.88,-132.95 | 458.72 | 80 |
| 7 | 10/29/2025 | 10:39:31 | 0.01,-136.95 | 0.32,-138.20 | 142.70 | 80 |
| 8 | 10/30/2025 | 10:18:05 | 0.00,-136.94 | -0.76,-133.67 | 373.14 | 80 |
| 9 | 10/31/2025 | 22:42:38 | -0.01,-136.93 | -0.47,-138.95 | 231.50 | 80 |
| 10 | 11/01/2025 | 22:21:12 | -0.00,-136.91 | 0.55,-134.42 | 284.20 | 80 |
| 11 | 11/03/2025 | 10:45:36 | 0.02,-136.88 | 0.63,-139.67 | 317.73 | 80 |
Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/20/2025
Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 10/20/2025 in txt file.
Historical Predications of SNOs between GOES-18 and NOAA-21