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: 8/11/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 08/12/2025 22:41:06 -0.01,-137.01 -0.50,-139.27 257.44 80
2 08/13/2025 22:25:00 -0.01,-137.01 0.47,-134.73 259.05 80
3 08/15/2025 10:46:49 0.02,-137.00 0.68,-140.01 342.75 80
4 08/16/2025 10:25:24 0.02,-136.99 -0.35,-135.48 173.08 80
5 08/17/2025 22:47:20 -0.02,-136.99 -0.88,-140.77 431.73 80
6 08/18/2025 22:31:15 -0.03,-136.98 0.15,-136.24 83.72 80
7 08/21/2025 10:34:18 0.04,-136.94 0.03,-136.98 4.31 80
8 08/23/2025 22:34:49 -0.04,-136.92 -0.21,-137.75 94.09 80
9 08/24/2025 22:16:03 -0.04,-136.91 0.77,-133.21 421.12 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/11/2025
SNOs_Map_GOES-18_NOAA-21_20250812.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 08/11/2025 in txt file.

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