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: 9/25/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/25/2025 22:18:29 0.02,-137.01 0.88,-133.15 439.72 80
2 09/27/2025 10:40:15 -0.02,-137.00 0.33,-138.41 161.81 80
3 09/28/2025 10:18:50 -0.02,-136.99 -0.69,-133.87 354.32 80
4 09/29/2025 22:43:25 0.01,-136.98 -0.46,-139.18 250.05 80
5 09/30/2025 22:22:00 0.02,-136.97 0.56,-134.64 265.61 80
6 10/02/2025 10:46:26 -0.02,-136.94 0.63,-139.91 337.02 80
7 10/03/2025 10:25:00 -0.02,-136.93 -0.40,-135.37 178.33 80
8 10/04/2025 22:46:55 0.02,-136.91 -0.80,-140.67 427.11 80
9 10/05/2025 22:30:48 0.02,-136.90 0.17,-136.12 88.09 80
10 10/08/2025 10:33:48 0.00,-136.84 0.02,-136.84 1.66 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/25/2025
SNOs_Map_GOES-18_NOAA-21_20250926.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 09/25/2025 in txt file.

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