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: 9/23/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/24/2025 19:14:30 0.24, -89.54 0.76, -87.14 273.42 80
2 09/26/2025 07:36:17 -0.23, -89.51 0.39, -92.41 329.46 80
3 09/27/2025 07:14:52 -0.24, -89.52 -0.62, -87.87 187.61 80
4 09/28/2025 19:39:26 0.23, -89.56 -0.58, -93.16 411.14 80
5 09/29/2025 19:20:41 0.24, -89.57 0.43, -88.63 106.34 80
6 10/01/2025 07:42:27 -0.23, -89.55 0.76, -93.89 495.56 80
7 10/02/2025 07:21:01 -0.24, -89.55 -0.26, -89.36 21.88 80
8 10/04/2025 19:24:11 0.24, -89.61 0.15, -90.13 58.92 80
9 10/05/2025 19:05:26 0.25, -89.62 1.17, -85.60 459.28 80
10 10/07/2025 07:29:51 -0.23, -89.61 0.06, -90.85 141.19 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/23/2025
SNOs_Map_GOES-17_NOAA-21_20250924.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 09/23/2025 in txt file.

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