Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between GOES-15 and NPP Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/9/2025
Index Date Time (GOES-15) GOES-15 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 10/10/2025 09:33:45 0.43, 61.37 -0.10, 59.01 269.52 80
2 10/11/2025 09:12:22 0.47, 61.37 0.97, 63.52 245.60 80
3 10/12/2025 21:36:51 -0.41, 61.41 0.30, 58.27 357.24 80
4 10/13/2025 21:15:28 -0.45, 61.42 -0.77, 62.79 156.49 80
5 10/15/2025 09:40:05 0.38, 61.42 -0.50, 57.51 446.57 80
6 10/16/2025 09:18:42 0.42, 61.43 0.57, 62.02 68.39 80
7 10/18/2025 21:24:28 -0.39, 61.46 -0.38, 61.29 18.59 80
8 10/19/2025 21:03:04 -0.43, 61.47 -1.40, 65.82 495.39 80
9 10/21/2025 09:27:41 0.36, 61.48 0.15, 60.53 108.17 80
10 10/22/2025 09:06:17 0.40, 61.49 1.17, 65.06 406.44 80

Figure of GOES-15 and NPP satellite orbits during SNOs since TLE Epoch: 10/9/2025
SNOs_Map_GOES-15_NPP_20251010.jpg

Download SNOs between GOES-15 and NPP since TLE EPOCH: 10/09/2025 in txt file.

Historical Predications of SNOs between GOES-15 and NPP