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: 10/21/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/21/2025 19:06:04 0.22, -89.53 1.12, -85.47 462.56 18
2 10/23/2025 07:29:27 -0.19, -89.51 0.10, -90.72 137.67 80
3 10/24/2025 07:08:01 -0.20, -89.52 -0.96, -86.19 379.42 80
4 10/25/2025 19:32:34 0.17, -89.55 -0.28, -91.47 219.88 80
5 10/26/2025 19:11:09 0.19, -89.55 0.79, -86.94 297.74 80
6 10/28/2025 07:35:33 -0.16, -89.55 0.41, -92.19 301.41 80
7 10/29/2025 07:14:07 -0.18, -89.55 -0.60, -87.65 215.85 80
8 10/30/2025 19:38:40 0.15, -89.58 -0.63, -92.94 383.55 80
9 10/31/2025 19:17:15 0.17, -89.59 0.44, -88.41 134.55 80
10 11/02/2025 07:41:38 -0.14, -89.60 0.80, -93.65 462.79 80
11 11/03/2025 07:20:12 -0.16, -89.60 -0.28, -89.12 55.02 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/21/2025
SNOs_Map_GOES-17_NOAA-21_20251022.jpg

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

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