Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between GOES-17 and NOAA-21 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/16/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/17/2025 07:42:06 -0.20, -89.49 0.78, -93.78 490.29 80
2 10/18/2025 07:20:40 -0.22, -89.49 -0.27, -89.25 26.73 80
3 10/20/2025 19:26:28 0.20, -89.53 0.08, -90.01 54.40 80
4 10/21/2025 19:05:03 0.22, -89.54 1.13, -85.48 463.48 80
5 10/23/2025 07:29:27 -0.19, -89.53 0.08, -90.72 136.38 80
6 10/24/2025 07:08:01 -0.20, -89.53 -0.98, -86.20 380.95 80
7 10/25/2025 19:32:35 0.17, -89.57 -0.26, -91.48 217.97 80
8 10/26/2025 19:11:09 0.19, -89.58 0.80, -86.95 299.91 80
9 10/28/2025 07:35:33 -0.16, -89.57 0.40, -92.20 298.89 80
10 10/29/2025 07:14:07 -0.18, -89.58 -0.61, -87.66 218.60 80
11 10/30/2025 19:38:40 0.15, -89.61 -0.61, -92.94 380.46 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/16/2025
SNOs_Map_GOES-17_NOAA-21_20251017.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 10/16/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NOAA-21