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: 9/22/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/23/2025 19:30:35 0.24, -89.53 -0.27, -91.67 244.21 80
2 09/24/2025 19:14:31 0.24, -89.54 0.80, -87.15 273.26 80
3 09/26/2025 07:36:17 -0.23, -89.51 0.42, -92.40 329.46 80
4 09/27/2025 07:14:51 -0.24, -89.52 -0.59, -87.87 187.59 80
5 09/28/2025 19:39:27 0.23, -89.56 -0.56, -93.17 411.35 80
6 09/29/2025 19:20:41 0.24, -89.57 0.45, -88.64 106.10 80
7 10/01/2025 07:42:27 -0.23, -89.55 0.75, -93.89 495.68 80
8 10/02/2025 07:21:02 -0.24, -89.55 -0.26, -89.36 21.69 80
9 10/04/2025 19:26:52 0.24, -89.61 0.14, -90.13 59.27 80
10 10/05/2025 19:05:26 0.25, -89.62 1.16, -85.60 458.84 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/22/2025
SNOs_Map_GOES-17_NOAA-21_20250923.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 09/22/2025 in txt file.

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