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: 10/22/2025
Index Date Time (GOES-15) GOES-15 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 10/23/2025 21:30:46 -0.33, 61.49 0.04, 59.80 192.29 80
2 10/24/2025 21:09:22 -0.37, 61.51 -1.00, 64.33 321.05 80
3 10/26/2025 09:33:59 0.29, 61.54 -0.24, 59.04 283.73 80
4 10/27/2025 09:12:35 0.34, 61.55 0.79, 63.57 230.32 80
5 10/28/2025 21:37:03 -0.26, 61.57 0.45, 58.31 370.28 80
6 10/29/2025 21:15:40 -0.31, 61.59 -0.59, 62.84 142.43 80
7 10/31/2025 09:40:15 0.23, 61.63 -0.69, 57.56 464.38 80
8 11/01/2025 09:18:52 0.28, 61.65 0.35, 62.09 49.38 80
9 11/03/2025 21:24:37 -0.23, 61.69 -0.16, 61.36 37.36 80
10 11/04/2025 21:03:13 -0.28, 61.72 -1.20, 65.88 474.76 80

Figure of GOES-15 and NPP satellite orbits during SNOs since TLE Epoch: 10/22/2025
SNOs_Map_GOES-15_NPP_20251023.jpg

Download SNOs between GOES-15 and NPP since TLE EPOCH: 10/22/2025 in txt file.

Historical Predications of SNOs between GOES-15 and NPP