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: 11/29/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/30/2025 10:40:10 0.00,-137.00 0.32,-138.31 150.46 80
2 12/01/2025 10:18:47 0.01,-136.99 -0.71,-133.79 364.76 80
3 12/02/2025 22:40:46 -0.00,-136.98 -0.48,-139.10 241.62 80
4 12/03/2025 22:24:44 -0.00,-136.97 0.55,-134.58 273.02 80
5 12/05/2025 10:46:33 -0.00,-136.95 0.67,-139.85 331.07 80
6 12/06/2025 10:25:11 -0.01,-136.93 -0.36,-135.33 182.85 80
7 12/07/2025 22:47:10 0.01,-136.91 -0.82,-140.64 425.17 80
8 12/08/2025 22:31:07 0.02,-136.89 0.17,-136.11 88.85 80
9 12/11/2025 10:34:14 -0.02,-136.85 -0.04,-136.87 2.87 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/29/2025
SNOs_Map_GOES-18_NOAA-21_20251130.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 11/29/2025 in txt file.

Historical Predications of SNOs between GOES-18 and NOAA-21