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: 9/18/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/18/2025 19:24:24 0.24, -89.51 0.07, -90.17 76.02 80
2 09/19/2025 19:08:19 0.24, -89.52 1.13, -85.65 441.09 80
3 09/21/2025 07:30:05 -0.24, -89.48 0.11, -90.91 162.75 80
4 09/22/2025 07:08:41 -0.24, -89.49 -0.96, -86.38 354.42 80
5 09/23/2025 19:30:35 0.24, -89.54 -0.26, -91.67 243.63 80
6 09/24/2025 19:14:31 0.24, -89.55 0.80, -87.15 273.99 80
7 09/26/2025 07:36:17 -0.23, -89.52 0.42, -92.40 328.75 80
8 09/27/2025 07:14:52 -0.24, -89.53 -0.59, -87.87 188.46 80
9 09/28/2025 19:39:27 0.23, -89.57 -0.57, -93.17 410.05 80
10 09/29/2025 19:20:41 0.24, -89.58 0.44, -88.64 107.55 80
11 10/01/2025 07:42:29 -0.23, -89.57 0.72, -93.91 494.28 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/18/2025
SNOs_Map_GOES-17_NOAA-21_20250919.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 09/18/2025 in txt file.

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