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: 10/19/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/20/2025 19:26:28 0.20, -89.52 0.09, -90.01 55.08 80
2 10/21/2025 19:05:03 0.22, -89.53 1.15, -85.48 462.55 80
3 10/23/2025 07:29:27 -0.19, -89.51 0.07, -90.73 137.67 80
4 10/24/2025 07:08:01 -0.20, -89.52 -0.94, -86.19 379.46 80
5 10/25/2025 19:32:35 0.17, -89.55 -0.24, -91.48 219.76 80
6 10/26/2025 19:11:08 0.19, -89.56 0.76, -86.94 297.90 80
7 10/28/2025 07:35:33 -0.16, -89.55 0.43, -92.19 301.22 80
8 10/29/2025 07:14:07 -0.18, -89.55 -0.63, -87.66 216.07 80
9 10/30/2025 19:38:41 0.15, -89.58 -0.59, -92.95 383.27 80
10 10/31/2025 19:17:14 0.17, -89.59 0.42, -88.41 134.87 80
11 11/02/2025 07:41:38 -0.14, -89.60 0.76, -93.66 462.44 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/19/2025
SNOs_Map_GOES-17_NOAA-21_20251020.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 10/19/2025 in txt file.

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