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: 8/15/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 08/16/2025 10:25:24 -0.03,-136.99 -0.35,-135.48 171.76 80
2 08/17/2025 22:47:21 0.04,-136.99 -0.82,-140.78 432.29 80
3 08/18/2025 22:31:16 0.04,-136.98 0.21,-136.26 83.08 80
4 08/21/2025 10:31:39 -0.05,-136.94 -0.03,-136.99 5.89 80
5 08/23/2025 22:34:50 0.05,-136.93 -0.15,-137.76 94.96 80
6 08/24/2025 22:18:45 0.05,-136.92 0.89,-133.23 420.35 80
7 08/26/2025 10:37:53 -0.05,-136.88 0.33,-138.49 184.06 80
8 08/27/2025 10:21:48 -0.05,-136.87 -0.71,-133.97 330.87 80
9 08/28/2025 22:41:03 0.06,-136.86 -0.49,-139.27 274.44 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/15/2025
SNOs_Map_GOES-18_NOAA-21_20250816.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 08/15/2025 in txt file.

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