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: 11/19/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/21/2025 19:26:33 0.03, -89.50 -0.07, -89.96 52.50 80
2 11/22/2025 19:05:11 0.06, -89.50 0.95, -85.44 462.68 80
3 11/24/2025 07:29:40 -0.00, -89.50 0.28, -90.71 137.77 80
4 11/25/2025 07:08:18 -0.04, -89.50 -0.75, -86.18 376.98 80
5 11/26/2025 19:32:57 -0.02, -89.50 -0.47, -91.49 227.16 80
6 11/27/2025 19:11:35 0.02, -89.51 0.56, -86.97 288.46 80
7 11/29/2025 07:36:04 0.04, -89.52 0.67, -92.24 310.34 80
8 11/30/2025 07:14:42 0.01, -89.52 -0.42, -87.73 204.94 80
9 12/01/2025 19:39:21 -0.06, -89.52 -0.84, -93.03 399.25 80
10 12/02/2025 19:17:58 -0.04, -89.53 0.19, -88.51 116.59 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/19/2025
SNOs_Map_GOES-17_NOAA-21_20251120.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 11/19/2025 in txt file.

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