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: 10/7/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/08/2025 10:31:09 -0.02,-137.00 -0.04,-136.85 17.56 80
2 10/10/2025 22:34:17 -0.00,-137.00 -0.11,-137.61 68.36 80
3 10/11/2025 22:15:31 0.00,-137.00 0.87,-133.06 447.96 80
4 10/13/2025 10:39:56 0.00,-136.97 0.33,-138.32 153.86 80
5 10/14/2025 10:18:31 -0.00,-136.96 -0.72,-133.79 362.07 80
6 10/15/2025 22:43:05 0.00,-136.96 -0.47,-139.08 241.93 80
7 10/16/2025 22:21:39 0.00,-136.95 0.52,-134.54 274.15 80
8 10/18/2025 10:46:04 0.00,-136.93 0.67,-139.80 327.43 80
9 10/19/2025 10:24:38 0.01,-136.92 -0.39,-135.27 188.56 80
10 10/20/2025 22:46:32 -0.02,-136.90 -0.86,-140.55 415.84 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/7/2025
SNOs_Map_GOES-18_NOAA-21_20251008.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 10/07/2025 in txt file.

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