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: 9/1/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 09/02/2025 07:10:38 -0.21, -89.50 -0.98, -86.20 377.58 80
2 09/03/2025 19:32:38 0.21, -89.53 -0.26, -91.50 225.17 80
3 09/04/2025 19:16:35 0.22, -89.53 0.76, -86.97 290.52 80
4 09/06/2025 07:38:26 -0.22, -89.50 0.43, -92.25 313.92 80
5 09/07/2025 07:17:03 -0.22, -89.50 -0.59, -87.72 201.92 80
6 09/08/2025 19:39:03 0.22, -89.53 -0.57, -93.04 400.09 80
7 09/09/2025 19:23:01 0.22, -89.54 0.46, -88.52 116.15 80
8 09/11/2025 07:44:51 -0.22, -89.51 0.72, -93.79 487.30 80
9 09/12/2025 07:23:29 -0.22, -89.51 -0.31, -89.27 28.75 80
10 09/14/2025 19:26:46 0.23, -89.54 0.14, -90.06 57.74 80
11 09/15/2025 19:10:42 0.23, -89.55 1.12, -85.52 458.49 80

Figure of GOES-17 and NPP satellite orbits during SNOs since TLE Epoch: 9/1/2025
SNOs_Map_GOES-17_NPP_20250902.jpg

Download SNOs between GOES-17 and NPP since TLE EPOCH: 09/01/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NPP