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: 11/15/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/15/2025 19:37:43 0.06, -89.50 0.00, -93.11 401.34 0
2 11/16/2025 19:17:29 0.08, -89.50 0.31, -88.43 122.59 80
3 11/18/2025 07:41:58 -0.03, -89.50 0.92, -93.69 477.63 80
4 11/19/2025 07:20:37 -0.06, -89.51 -0.16, -89.18 37.54 80
5 11/21/2025 19:26:34 0.03, -89.52 -0.05, -89.97 50.58 80
6 11/22/2025 19:05:11 0.06, -89.53 0.98, -85.45 465.19 80
7 11/24/2025 07:29:40 -0.01, -89.53 0.24, -90.71 134.39 80
8 11/25/2025 07:08:18 -0.04, -89.53 -0.79, -86.19 380.85 80
9 11/26/2025 19:32:56 -0.01, -89.54 -0.47, -91.49 222.55 80
10 11/27/2025 19:11:34 0.02, -89.55 0.56, -86.97 293.64 80
11 11/29/2025 07:36:03 0.04, -89.57 0.65, -92.24 304.20 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/15/2025
SNOs_Map_GOES-17_NOAA-21_20251116.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 11/15/2025 in txt file.

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