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: 8/31/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 09/01/2025 07:32:00 -0.20, -89.51 0.08, -90.71 137.51 80
2 09/02/2025 07:10:38 -0.21, -89.51 -0.93, -86.19 378.65 80
3 09/03/2025 19:32:38 0.21, -89.56 -0.25, -91.50 222.05 80
4 09/04/2025 19:16:35 0.22, -89.57 0.77, -86.98 294.57 80
5 09/06/2025 07:38:26 -0.22, -89.55 0.42, -92.25 309.01 80
6 09/07/2025 07:17:03 -0.22, -89.55 -0.60, -87.73 207.74 80
7 09/08/2025 19:39:04 0.22, -89.60 -0.56, -93.04 392.28 80
8 09/09/2025 19:23:01 0.22, -89.62 0.47, -88.52 124.89 80
9 09/11/2025 07:44:51 -0.22, -89.60 0.71, -93.79 477.66 80
10 09/12/2025 07:23:29 -0.22, -89.61 -0.31, -89.27 39.14 80
11 09/14/2025 19:26:46 0.23, -89.67 0.15, -90.06 44.25 80

Figure of GOES-17 and NPP satellite orbits during SNOs since TLE Epoch: 8/31/2025
SNOs_Map_GOES-17_NPP_20250901.jpg

Download SNOs between GOES-17 and NPP since TLE EPOCH: 08/31/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NPP