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: 8/4/2025
| Index | Date | Time (GOES-18) | GOES-18 Lat,Lon | NOAA-21 Lat,Lon | Distance(km) | Time Diff (sec) |
| 1 | 08/05/2025 | 10:31:38 | 0.02,-137.00 | 0.04,-136.98 | 3.56 | 80 |
| 2 | 08/07/2025 | 22:34:50 | -0.02,-137.00 | -0.22,-137.75 | 86.49 | 80 |
| 3 | 08/08/2025 | 22:18:46 | -0.03,-137.00 | 0.80,-133.22 | 429.79 | 80 |
| 4 | 08/10/2025 | 10:40:34 | 0.03,-136.99 | 0.35,-138.50 | 171.37 | 80 |
| 5 | 08/11/2025 | 10:19:09 | 0.02,-136.99 | -0.68,-133.97 | 344.53 | 80 |
| 6 | 08/12/2025 | 22:41:05 | -0.02,-136.98 | -0.56,-139.26 | 260.88 | 80 |
| 7 | 08/13/2025 | 22:25:00 | -0.03,-136.97 | 0.46,-134.73 | 254.73 | 80 |
| 8 | 08/15/2025 | 10:46:49 | 0.03,-136.95 | 0.69,-140.01 | 347.66 | 80 |
| 9 | 08/16/2025 | 10:25:23 | 0.03,-136.94 | -0.27,-135.47 | 167.32 | 80 |
| 10 | 08/17/2025 | 22:47:19 | -0.04,-136.91 | -0.89,-140.77 | 439.69 | 80 |
Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/4/2025
Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 08/04/2025 in txt file.
Historical Predications of SNOs between GOES-18 and NOAA-21