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: 8/30/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 08/31/2025 10:46:46 -0.03,-136.98 0.66,-140.00 343.96 80
2 09/01/2025 10:25:22 -0.03,-136.97 -0.38,-135.47 171.52 80
3 09/02/2025 22:47:17 0.04,-136.96 -0.80,-140.77 433.97 80
4 09/03/2025 22:31:12 0.04,-136.95 0.18,-136.23 81.22 80
5 09/06/2025 10:34:14 -0.04,-136.91 -0.03,-136.97 7.18 80
6 09/08/2025 22:34:44 0.04,-136.87 -0.14,-137.73 98.66 80
7 09/09/2025 22:18:39 0.04,-136.85 0.85,-133.20 415.89 80
8 09/11/2025 10:40:26 -0.04,-136.81 0.34,-138.46 188.65 80
9 09/12/2025 10:19:01 -0.05,-136.79 -0.66,-133.93 325.22 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/30/2025
SNOs_Map_GOES-18_NOAA-21_20250831.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 08/30/2025 in txt file.

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