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: 10/8/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/10/2025 22:34:17 0.00,-137.00 -0.15,-137.60 68.33 80
2 10/11/2025 22:18:11 0.00,-137.00 0.89,-133.07 448.00 80
3 10/13/2025 10:39:57 -0.00,-136.97 0.31,-138.32 154.04 80
4 10/14/2025 10:18:31 -0.01,-136.96 -0.74,-133.79 361.88 80
5 10/15/2025 22:40:25 0.01,-136.96 -0.45,-139.09 241.92 80
6 10/16/2025 22:24:19 0.01,-136.95 0.53,-134.54 274.17 80
7 10/18/2025 10:46:04 -0.00,-136.93 0.65,-139.80 327.65 80
8 10/19/2025 10:24:39 -0.00,-136.92 -0.40,-135.27 188.33 80
9 10/20/2025 22:46:32 -0.01,-136.91 -0.85,-140.55 415.86 80
10 10/21/2025 22:27:47 -0.02,-136.89 0.20,-136.02 99.88 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/8/2025
SNOs_Map_GOES-18_NOAA-21_20251009.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 10/08/2025 in txt file.

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