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: 7/19/2025
Index Date Time (GOES-15) GOES-15 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 07/20/2025 21:10:16 -0.36, 61.36 -1.06, 64.40 346.60 80
2 07/22/2025 09:29:33 0.39, 61.30 -0.13, 59.10 251.79 80
3 07/23/2025 09:13:28 0.38, 61.31 0.88, 63.63 264.11 80
4 07/24/2025 21:32:37 -0.41, 61.40 0.27, 58.36 345.87 80
5 07/25/2025 21:16:32 -0.40, 61.41 -0.75, 62.90 169.90 80
6 07/27/2025 09:35:48 0.42, 61.36 -0.44, 57.60 428.83 80
7 07/28/2025 09:19:44 0.41, 61.36 0.58, 62.13 87.28 80
8 07/30/2025 21:20:07 -0.42, 61.46 -0.41, 61.40 6.27 80
9 08/02/2025 09:23:19 0.44, 61.43 0.24, 60.64 90.59 80

Figure of GOES-15 and NPP satellite orbits during SNOs since TLE Epoch: 7/19/2025
SNOs_Map_GOES-15_NPP_20250720.jpg

Download SNOs between GOES-15 and NPP since TLE EPOCH: 07/19/2025 in txt file.

Historical Predications of SNOs between GOES-15 and NPP