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: 9/26/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/27/2025 10:37:36 -0.01,-136.99 0.28,-138.42 161.67 80
2 09/28/2025 10:18:50 -0.01,-136.99 -0.68,-133.87 354.44 80
3 09/29/2025 22:40:45 0.00,-136.98 -0.47,-139.18 250.15 80
4 09/30/2025 22:24:39 0.01,-136.97 0.55,-134.64 265.33 80
5 10/02/2025 10:46:26 -0.02,-136.94 0.64,-139.90 337.59 80
6 10/03/2025 10:25:00 -0.02,-136.92 -0.38,-135.37 177.73 80
7 10/04/2025 22:46:55 0.01,-136.91 -0.81,-140.66 427.68 80
8 10/05/2025 22:30:48 0.01,-136.89 0.15,-136.12 87.62 80
9 10/08/2025 10:31:08 0.01,-136.83 0.04,-136.83 3.01 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/26/2025
SNOs_Map_GOES-18_NOAA-21_20250927.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 09/26/2025 in txt file.

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