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: 9/19/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/19/2025 19:08:18 0.24, -89.52 1.08, -85.64 441.05 80
2 09/21/2025 07:30:06 -0.24, -89.48 0.09, -90.91 162.82 80
3 09/22/2025 07:08:40 -0.24, -89.49 -0.91, -86.37 354.27 80
4 09/23/2025 19:30:35 0.24, -89.54 -0.25, -91.67 243.94 80
5 09/24/2025 19:14:30 0.24, -89.54 0.76, -87.14 273.60 80
6 09/26/2025 07:36:17 -0.23, -89.52 0.40, -92.41 329.17 80
7 09/27/2025 07:14:52 -0.24, -89.52 -0.60, -87.87 187.95 80
8 09/28/2025 19:36:47 0.23, -89.57 -0.55, -93.18 410.69 80
9 09/29/2025 19:20:42 0.24, -89.58 0.46, -88.64 106.85 80
10 10/01/2025 07:42:28 -0.23, -89.56 0.76, -93.90 495.01 80
11 10/02/2025 07:21:04 -0.24, -89.56 -0.32, -89.38 22.51 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/19/2025
SNOs_Map_GOES-17_NOAA-21_20250920.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 09/19/2025 in txt file.

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