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: 10/15/2025
Index Date Time (GOES-15) GOES-15 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 10/16/2025 09:18:41 0.43, 61.42 0.54, 62.03 69.37 80
2 10/18/2025 21:24:27 -0.39, 61.46 -0.36, 61.30 18.04 80
3 10/19/2025 21:03:05 -0.43, 61.47 -1.44, 65.81 495.81 80
4 10/21/2025 09:27:40 0.36, 61.47 0.13, 60.54 106.94 80
5 10/22/2025 09:06:18 0.40, 61.48 1.22, 65.05 407.74 80
6 10/23/2025 21:30:46 -0.33, 61.50 0.04, 59.80 193.77 80
7 10/24/2025 21:09:22 -0.37, 61.53 -0.99, 64.33 319.30 80
8 10/26/2025 09:33:58 0.29, 61.56 -0.30, 59.05 286.08 80
9 10/27/2025 09:12:35 0.34, 61.57 0.80, 63.57 227.74 80
10 10/28/2025 21:37:03 -0.26, 61.59 0.45, 58.31 373.03 80
11 10/29/2025 21:15:40 -0.31, 61.62 -0.58, 62.84 139.40 80

Figure of GOES-15 and NPP satellite orbits during SNOs since TLE Epoch: 10/15/2025
SNOs_Map_GOES-15_NPP_20251016.jpg

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

Historical Predications of SNOs between GOES-15 and NPP