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: 8/8/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 08/08/2025 22:18:47 0.03,-137.00 0.86,-133.23 428.62 80
2 08/10/2025 10:40:35 -0.04,-137.00 0.29,-138.51 172.29 80
3 08/11/2025 10:21:50 -0.04,-137.00 -0.74,-133.98 344.35 80
4 08/12/2025 22:41:07 0.04,-137.01 -0.45,-139.28 259.32 80
5 08/13/2025 22:25:01 0.04,-137.00 0.52,-134.74 257.01 80
6 08/15/2025 10:44:10 -0.05,-136.99 0.63,-140.02 345.18 80
7 08/16/2025 10:28:05 -0.05,-136.98 -0.39,-135.49 170.36 80
8 08/17/2025 22:47:21 0.05,-136.97 -0.78,-140.80 435.18 80
9 08/18/2025 22:31:16 0.06,-136.96 0.19,-136.26 79.97 80
10 08/21/2025 10:34:20 -0.07,-136.92 -0.06,-137.00 8.80 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/8/2025
SNOs_Map_GOES-18_NOAA-21_20250809.jpg

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

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