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: 10/23/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/24/2025 10:30:46 -0.01,-136.99 -0.08,-136.74 29.47 80
2 10/26/2025 22:36:33 0.00,-136.98 -0.10,-137.49 57.98 80
3 10/27/2025 22:15:07 0.01,-136.97 0.91,-132.95 458.12 80
4 10/29/2025 10:39:31 -0.00,-136.95 0.29,-138.20 143.28 80
5 10/30/2025 10:18:05 -0.01,-136.94 -0.72,-133.66 372.47 80
6 10/31/2025 22:42:39 0.00,-136.92 -0.45,-138.96 232.42 80
7 11/01/2025 22:21:13 0.01,-136.90 0.56,-134.42 283.20 80
8 11/03/2025 10:45:37 0.00,-136.87 0.62,-139.67 318.75 80
9 11/04/2025 10:24:10 0.00,-136.85 -0.40,-135.13 196.43 80
10 11/05/2025 22:48:44 -0.02,-136.82 -0.82,-140.42 409.78 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/23/2025
SNOs_Map_GOES-18_NOAA-21_20251024.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 10/23/2025 in txt file.

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