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: 10/17/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/18/2025 07:20:40 -0.22, -89.49 -0.26, -89.25 26.44 80
2 10/20/2025 19:26:28 0.20, -89.53 0.07, -90.00 55.14 80
3 10/21/2025 19:05:02 0.22, -89.53 1.12, -85.47 462.64 80
4 10/23/2025 07:29:27 -0.19, -89.52 0.10, -90.72 137.49 80
5 10/24/2025 07:08:01 -0.20, -89.52 -0.96, -86.19 379.69 80
6 10/25/2025 19:32:34 0.17, -89.55 -0.27, -91.47 219.45 80
7 10/26/2025 19:11:09 0.19, -89.56 0.79, -86.95 298.27 80
8 10/28/2025 07:35:33 -0.16, -89.55 0.41, -92.20 300.78 80
9 10/29/2025 07:14:07 -0.18, -89.56 -0.60, -87.66 216.55 80
10 10/30/2025 19:38:41 0.15, -89.59 -0.58, -92.95 382.73 80
11 10/31/2025 19:17:15 0.17, -89.60 0.44, -88.41 135.46 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/17/2025
SNOs_Map_GOES-17_NOAA-21_20251018.jpg

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

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