Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 10 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 10/10/2025   22:35:39   (   0.01,-137.01) (   0.00,-137.63)   69.68                 0
 10/11/2025   22:18:12   (   0.01,-137.01) (   0.92,-133.07)  448.71                80
 10/13/2025   10:39:57   (  -0.01,-136.99) (   0.28,-138.33)  152.40                80
 10/14/2025   10:18:31   (  -0.01,-136.99) (  -0.71,-133.79)  364.19                80
 10/15/2025   22:40:25   (   0.01,-136.99) (  -0.48,-139.08)  238.60                80
 10/16/2025   22:24:20   (   0.02,-136.99) (   0.57,-134.55)  278.12                80
 10/18/2025   10:46:05   (  -0.01,-136.97) (   0.62,-139.81)  322.88                80
 10/19/2025   10:24:38   (  -0.01,-136.97) (  -0.38,-135.26)  193.77                80
 10/20/2025   22:46:33   (  -0.01,-136.97) (  -0.81,-140.56)  409.14                80
 10/21/2025   22:30:26   (  -0.02,-136.96) (   0.18,-136.02)  107.27                80
 10/23/2025   10:52:11   (   0.02,-136.93) (   0.98,-141.27)  494.46                80
 10/24/2025   10:30:45   (   0.02,-136.92) (  -0.01,-136.73)   21.16                80