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: 10/30/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/31/2025 22:42:39 0.02,-137.00 -0.45,-138.96 223.34 80
2 11/01/2025 22:21:14 0.02,-137.01 0.63,-134.43 294.09 80
3 11/03/2025 10:45:38 -0.02,-137.00 0.55,-139.68 305.22 80
4 11/04/2025 10:24:11 -0.01,-137.00 -0.40,-135.13 211.86 80
5 11/05/2025 22:48:45 -0.01,-136.99 -0.77,-140.43 391.70 80
6 11/06/2025 22:27:18 -0.01,-136.98 0.25,-135.89 124.66 80
7 11/08/2025 10:51:42 0.01,-136.96 0.97,-141.13 476.30 80
8 11/09/2025 10:30:15 0.01,-136.94 -0.05,-136.59 39.51 80
9 11/11/2025 22:36:03 -0.00,-136.91 -0.08,-137.35 50.11 80
10 11/12/2025 22:14:37 0.00,-136.89 0.94,-132.81 465.67 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/30/2025
SNOs_Map_GOES-18_NOAA-21_20251031.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 10/30/2025 in txt file.

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