Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between GOES-17 and NPP Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 6/23/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 06/24/2025 20:03:47 0.02, -98.52 -0.18, -99.54 115.90 80
2 06/25/2025 19:47:40 0.02, -97.98 0.70, -94.98 342.33 80
3 06/27/2025 08:06:46 -0.01, -97.14 0.69,-100.20 349.32 80
4 06/28/2025 07:50:39 -0.01, -96.61 -0.20, -95.64 109.39 80
5 06/30/2025 19:51:07 -0.00, -95.28 -0.23, -96.35 121.60 80
6 07/01/2025 19:35:01 -0.01, -94.75 0.66, -91.79 337.54 80
7 07/03/2025 07:54:06 0.00, -93.92 0.73, -97.01 353.07 80
8 07/04/2025 07:38:00 0.00, -93.39 -0.22, -92.47 106.16 80
9 07/06/2025 19:38:27 0.00, -92.08 -0.25, -93.16 124.26 80
10 07/07/2025 19:22:22 0.00, -91.55 0.69, -88.62 334.90 80

Figure of GOES-17 and NPP satellite orbits during SNOs since TLE Epoch: 6/23/2025
SNOs_Map_GOES-17_NPP_20250624.jpg

Download SNOs between GOES-17 and NPP since TLE EPOCH: 06/23/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NPP