Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 10 17.  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)
 10/18/2025   10:46:05   (  -0.02,-137.00) (   0.58,-139.81)  320.19                80
 10/19/2025   10:24:39   (  -0.03,-137.00) (  -0.42,-135.27)  196.87                80
 10/20/2025   22:46:33   (   0.03,-137.00) (  -0.77,-140.56)  405.85                80
 10/21/2025   22:27:47   (   0.01,-137.00) (   0.23,-136.02)  111.18                80
 10/23/2025   10:52:11   (   0.01,-136.98) (   0.99,-141.27)  489.55                80
 10/24/2025   10:30:45   (   0.01,-136.97) (  -0.07,-136.74)   26.74                80
 10/26/2025   22:36:33   (  -0.01,-136.95) (  -0.11,-137.49)   61.99                80
 10/27/2025   22:15:07   (  -0.00,-136.93) (   0.90,-132.95)  453.58                80
 10/29/2025   10:39:31   (   0.01,-136.90) (   0.30,-138.20)  149.03                80
 10/30/2025   10:18:05   (   0.00,-136.88) (  -0.71,-133.66)  366.13                80