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: 10/2/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/03/2025 10:25:00 -0.02,-137.00 -0.38,-135.37 185.82 80
2 10/04/2025 22:49:34 0.02,-137.00 -0.81,-140.66 417.26 80
3 10/05/2025 22:30:49 0.03,-137.00 0.22,-136.13 99.49 80
4 10/08/2025 10:31:09 -0.01,-136.98 -0.04,-136.85 15.44 80
5 10/10/2025 22:36:56 -0.01,-136.96 -0.16,-137.60 73.20 80
6 10/11/2025 22:15:31 -0.01,-136.94 0.89,-133.07 442.23 80
7 10/13/2025 10:39:56 0.01,-136.91 0.30,-138.33 160.24 80
8 10/14/2025 10:18:30 0.00,-136.90 -0.70,-133.78 354.93 80
9 10/15/2025 22:43:04 -0.01,-136.87 -0.47,-139.08 250.76 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/2/2025
SNOs_Map_GOES-18_NOAA-21_20251003.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 10/02/2025 in txt file.

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