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: 7/18/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/20/2025 10:34:17 -0.02,-136.99 -0.04,-136.99 2.63 80
2 07/22/2025 22:34:50 0.03,-136.98 -0.13,-137.76 88.79 80
3 07/23/2025 22:18:46 0.03,-136.97 0.88,-133.23 426.36 80
4 07/25/2025 10:37:53 -0.04,-136.94 0.32,-138.50 177.33 80
5 07/26/2025 10:21:48 -0.04,-136.93 -0.69,-133.97 337.83 80
6 07/27/2025 22:41:06 0.04,-136.93 -0.48,-139.28 267.58 80
7 07/28/2025 22:25:01 0.04,-136.92 0.54,-134.75 247.57 80
8 07/30/2025 10:44:09 -0.05,-136.89 0.67,-140.01 356.46 80
9 07/31/2025 10:28:04 -0.05,-136.87 -0.35,-135.48 158.27 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/18/2025
SNOs_Map_GOES-18_NOAA-21_20250719.jpg

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

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