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: 6/30/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 06/30/2025 22:47:12 0.00,-137.00 -0.82,-140.75 426.43 80
2 07/01/2025 22:31:08 -0.00,-137.01 0.18,-136.22 90.34 80
3 07/04/2025 10:34:12 -0.01,-137.01 -0.03,-136.96 5.65 80
4 07/06/2025 22:34:44 0.02,-137.01 -0.18,-137.73 83.68 80
5 07/07/2025 22:18:41 0.01,-137.00 0.88,-133.21 431.94 80
6 07/09/2025 10:37:48 -0.01,-136.98 0.32,-138.48 170.50 80
7 07/10/2025 10:21:44 -0.01,-136.97 -0.68,-133.95 344.54 80
8 07/11/2025 22:41:01 0.01,-136.96 -0.51,-139.25 262.13 80
9 07/12/2025 22:24:57 0.01,-136.94 0.49,-134.72 252.70 80
10 07/14/2025 10:44:05 -0.01,-136.92 0.65,-140.00 350.66 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 6/30/2025
SNOs_Map_GOES-18_NOAA-21_20250701.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 06/30/2025 in txt file.

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