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: 11/20/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 11/21/2025 07:12:15 -0.05, -89.50 -0.80, -86.23 372.97 80
2 11/22/2025 19:36:54 0.00, -89.50 -0.43, -91.53 230.69 80
3 11/23/2025 19:15:32 0.03, -89.50 0.62, -87.01 284.60 80
4 11/25/2025 07:40:03 0.02, -89.50 0.65, -92.27 315.36 80
5 11/26/2025 07:18:41 -0.01, -89.50 -0.41, -87.75 199.54 80
6 11/27/2025 19:43:21 -0.04, -89.50 -0.82, -93.05 404.26 80
7 11/28/2025 19:21:59 -0.01, -89.51 0.23, -88.54 111.51 80
8 11/30/2025 07:46:29 0.06, -89.53 1.02, -93.80 486.67 80
9 12/01/2025 07:25:08 0.03, -89.53 -0.03, -89.28 28.71 80
10 12/03/2025 19:31:05 -0.07, -89.53 -0.19, -90.05 59.64 80
11 12/04/2025 19:09:43 -0.04, -89.54 0.87, -85.54 456.15 80

Figure of GOES-17 and NPP satellite orbits during SNOs since TLE Epoch: 11/20/2025
SNOs_Map_GOES-17_NPP_20251121.jpg

Download SNOs between GOES-17 and NPP since TLE EPOCH: 11/20/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NPP