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: 11/25/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/27/2025 22:34:23 0.00,-137.00 -0.12,-137.57 65.01 80
2 11/28/2025 22:18:20 0.00,-136.99 0.91,-133.05 450.05 80
3 11/30/2025 10:40:10 -0.00,-136.97 0.31,-138.31 153.22 80
4 12/01/2025 10:18:47 -0.00,-136.96 -0.72,-133.79 361.29 80
5 12/02/2025 22:40:47 0.00,-136.95 -0.48,-139.10 246.07 80
6 12/03/2025 22:24:44 0.00,-136.93 0.55,-134.58 267.89 80
7 12/05/2025 10:46:33 -0.00,-136.89 0.67,-139.85 337.16 80
8 12/06/2025 10:25:11 0.00,-136.87 -0.36,-135.33 176.29 80
9 12/07/2025 22:47:09 -0.01,-136.84 -0.88,-140.63 432.36 80
10 12/08/2025 22:31:07 -0.01,-136.82 0.17,-136.11 81.13 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/25/2025
SNOs_Map_GOES-18_NOAA-21_20251126.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 11/25/2025 in txt file.

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