Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between GOES-18 and NOAA-21 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 11/14/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/15/2025 10:18:16 -0.00,-137.02 -0.74,-133.69 379.50 80
2 11/16/2025 22:40:16 0.00,-137.04 -0.44,-139.01 224.62 80
3 11/17/2025 22:24:14 -0.00,-137.04 0.57,-134.49 291.38 80
4 11/19/2025 10:46:04 0.00,-137.03 0.60,-139.76 310.69 80
5 11/20/2025 10:24:42 0.01,-137.03 -0.42,-135.24 204.86 80
6 11/21/2025 22:46:41 -0.02,-137.03 -0.80,-140.55 400.64 80
7 11/22/2025 22:30:38 -0.02,-137.03 0.23,-136.03 114.55 80
8 11/24/2025 10:52:28 0.03,-137.01 0.99,-141.30 488.74 80
9 11/25/2025 10:31:05 0.03,-137.00 -0.04,-136.78 25.93 80
10 11/27/2025 22:34:21 -0.03,-136.98 -0.18,-137.55 66.38 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/14/2025
SNOs_Map_GOES-18_NOAA-21_20251115.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 11/14/2025 in txt file.

Historical Predications of SNOs between GOES-18 and NOAA-21