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: 7/19/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/20/2025 07:11:29 -0.07, -89.49 -0.73, -86.39 352.17 80
2 07/21/2025 19:30:47 0.08, -89.52 -0.39, -91.71 249.01 80
3 07/22/2025 19:14:43 0.08, -89.52 0.62, -87.18 267.30 80
4 07/24/2025 07:33:50 -0.09, -89.49 0.58, -92.45 337.35 80
5 07/25/2025 07:17:46 -0.09, -89.49 -0.43, -87.92 179.49 80
6 07/26/2025 19:37:03 0.09, -89.54 -0.75, -93.23 420.20 80
7 07/27/2025 19:20:59 0.09, -89.55 0.27, -88.69 97.19 80
8 07/30/2025 07:24:02 -0.10, -89.54 -0.14, -89.44 11.74 80
9 08/01/2025 19:24:35 0.10, -89.61 -0.01, -90.22 69.32 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/19/2025
SNOs_Map_GOES-17_NOAA-21_20250720.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 07/19/2025 in txt file.

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