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: 11/12/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 11/14/2025 07:46:04 -0.06, -89.49 0.91, -93.79 489.50 80
2 11/15/2025 07:24:40 -0.08, -89.49 -0.16, -89.26 26.73 80
3 11/17/2025 19:30:31 0.06, -89.51 -0.08, -90.01 57.45 80
4 11/18/2025 19:09:08 0.08, -89.52 1.00, -85.49 459.62 80
5 11/20/2025 07:33:35 -0.03, -89.52 0.23, -90.74 138.53 80
6 11/21/2025 07:12:10 -0.06, -89.53 -0.79, -86.21 377.91 80
7 11/22/2025 19:36:46 0.00, -89.54 -0.44, -91.49 223.23 80
8 11/23/2025 19:15:21 0.03, -89.54 0.58, -86.96 293.91 80
9 11/25/2025 07:39:48 0.02, -89.56 0.63, -92.21 302.96 80
10 11/26/2025 07:18:24 -0.01, -89.56 -0.41, -87.68 213.78 80

Figure of GOES-17 and NPP satellite orbits during SNOs since TLE Epoch: 11/12/2025
SNOs_Map_GOES-17_NPP_20251113.jpg

Download SNOs between GOES-17 and NPP since TLE EPOCH: 11/12/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NPP