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: 7/28/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/28/2025 22:25:01 -0.01,-137.01 0.52,-134.74 259.10 80
2 07/30/2025 10:46:48 0.02,-137.01 0.68,-140.00 341.66 80
3 07/31/2025 10:25:24 0.02,-137.01 -0.33,-135.47 174.76 80
4 08/01/2025 22:47:20 -0.02,-137.01 -0.88,-140.77 429.40 80
5 08/02/2025 22:31:16 -0.02,-137.01 0.14,-136.24 86.61 80
6 08/05/2025 10:34:18 0.03,-136.98 0.05,-136.98 1.24 80
7 08/07/2025 22:34:50 -0.04,-136.96 -0.22,-137.75 90.56 80
8 08/08/2025 22:18:46 -0.05,-136.94 0.80,-133.22 424.44 80
9 08/10/2025 10:40:33 0.05,-136.92 0.41,-138.49 179.14 80
10 08/11/2025 10:19:09 0.05,-136.90 -0.61,-133.96 335.50 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/28/2025
SNOs_Map_GOES-18_NOAA-21_20250729.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/28/2025 in txt file.

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