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: 9/14/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NPP Lat,Lon Distance(km) Time Diff (sec)
1 09/14/2025 19:26:46 0.23, -89.52 0.11, -90.05 60.23 80
2 09/15/2025 19:10:43 0.23, -89.52 1.14, -85.52 455.54 80
3 09/17/2025 07:32:33 -0.23, -89.48 0.04, -90.80 150.04 80
4 09/18/2025 07:11:11 -0.24, -89.48 -0.99, -86.27 365.95 80
5 09/19/2025 19:33:10 0.24, -89.53 -0.21, -91.58 233.58 80
6 09/20/2025 19:17:08 0.24, -89.54 0.82, -87.06 283.30 80
7 09/22/2025 07:38:57 -0.23, -89.52 0.42, -92.32 320.19 80
8 09/23/2025 07:17:35 -0.24, -89.53 -0.61, -87.80 196.58 80
9 09/24/2025 19:39:34 0.23, -89.58 -0.57, -93.11 402.46 80
10 09/25/2025 19:23:31 0.24, -89.59 0.47, -88.59 114.73 80
11 09/27/2025 07:45:22 -0.23, -89.58 0.72, -93.86 487.89 80
12 09/28/2025 07:23:59 -0.24, -89.59 -0.32, -89.34 28.93 80

Figure of GOES-17 and NPP satellite orbits during SNOs since TLE Epoch: 9/14/2025
SNOs_Map_GOES-17_NPP_20250915.jpg

Download SNOs between GOES-17 and NPP since TLE EPOCH: 09/14/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NPP