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: 10/20/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/21/2025 19:05:03 0.22, -89.53 1.14, -85.48 462.53 80
2 10/23/2025 07:29:27 -0.19, -89.51 0.08, -90.72 137.67 80
3 10/24/2025 07:08:00 -0.20, -89.52 -0.92, -86.18 379.44 80
4 10/25/2025 19:32:35 0.17, -89.55 -0.26, -91.48 219.84 80
5 10/26/2025 19:11:08 0.19, -89.56 0.75, -86.94 297.81 80
6 10/28/2025 07:35:33 -0.16, -89.55 0.45, -92.19 301.34 80
7 10/29/2025 07:14:07 -0.18, -89.55 -0.62, -87.66 215.93 80
8 10/30/2025 19:38:40 0.15, -89.58 -0.61, -92.94 383.44 80
9 10/31/2025 19:17:15 0.17, -89.59 0.47, -88.42 134.71 80
10 11/02/2025 07:41:38 -0.14, -89.60 0.78, -93.66 462.64 80
11 11/03/2025 07:20:12 -0.16, -89.61 -0.24, -89.12 55.22 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/20/2025
SNOs_Map_GOES-17_NOAA-21_20251021.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 10/20/2025 in txt file.

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