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: 7/29/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/30/2025 10:46:48 0.01,-137.00 0.68,-140.00 341.89 80
2 07/31/2025 10:25:24 0.01,-137.00 -0.34,-135.47 174.40 80
3 08/01/2025 22:47:20 -0.02,-137.00 -0.88,-140.77 430.08 80
4 08/02/2025 22:31:16 -0.02,-137.00 0.14,-136.24 85.80 80
5 08/05/2025 10:34:18 0.03,-136.97 0.04,-136.98 1.37 80
6 08/07/2025 22:34:50 -0.04,-136.94 -0.22,-137.75 92.05 80
7 08/08/2025 22:18:46 -0.04,-136.93 0.81,-133.22 422.81 80
8 08/10/2025 10:40:33 0.04,-136.90 0.40,-138.49 180.86 80
9 08/11/2025 10:19:09 0.04,-136.88 -0.62,-133.96 333.65 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/29/2025
SNOs_Map_GOES-18_NOAA-21_20250730.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/29/2025 in txt file.

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