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: 9/20/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 09/22/2025 07:38:57 -0.23, -89.49 0.41, -92.32 323.01 80
2 09/23/2025 07:17:35 -0.24, -89.49 -0.62, -87.80 193.26 80
3 09/24/2025 19:39:34 0.23, -89.54 -0.56, -93.11 406.61 80
4 09/25/2025 19:23:31 0.24, -89.55 0.48, -88.59 110.13 80
5 09/27/2025 07:45:21 -0.23, -89.52 0.76, -93.85 493.19 80
6 09/28/2025 07:23:58 -0.24, -89.53 -0.28, -89.33 23.04 80
7 09/30/2025 19:29:54 0.24, -89.58 0.11, -90.11 60.43 80
8 10/01/2025 19:11:12 0.25, -89.59 1.15, -85.59 456.42 80
9 10/03/2025 07:33:02 -0.24, -89.57 0.03, -90.86 146.08 80
10 10/04/2025 07:11:38 -0.25, -89.58 -0.96, -86.33 370.65 80

Figure of GOES-17 and NPP satellite orbits during SNOs since TLE Epoch: 9/20/2025
SNOs_Map_GOES-17_NPP_20250921.jpg

Download SNOs between GOES-17 and NPP since TLE EPOCH: 09/20/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NPP