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: 9/9/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/09/2025 22:18:39 0.03,-137.00 0.89,-133.20 433.39 80
2 09/11/2025 10:40:27 -0.03,-137.00 0.30,-138.47 167.77 80
3 09/12/2025 10:19:01 -0.03,-137.00 -0.70,-133.93 348.71 80
4 09/13/2025 22:40:57 0.04,-137.00 -0.47,-139.23 254.82 80
5 09/14/2025 22:24:51 0.04,-136.99 0.53,-134.70 261.17 80
6 09/16/2025 10:46:38 -0.04,-136.97 0.65,-139.96 341.38 80
7 09/17/2025 10:25:14 -0.05,-136.97 -0.41,-135.44 174.43 80
8 09/18/2025 22:47:08 0.05,-136.96 -0.81,-140.73 429.67 80
9 09/19/2025 22:31:03 0.05,-136.96 0.19,-136.19 86.27 80
10 09/22/2025 10:34:05 -0.05,-136.93 -0.02,-136.92 2.98 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/9/2025
SNOs_Map_GOES-18_NOAA-21_20250910.jpg

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

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