Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 10 21.  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)
 10/21/2025   22:27:47   (   0.02,-137.01) (   0.26,-136.03)  112.40                80
 10/23/2025   10:52:11   (  -0.00,-137.00) (   0.95,-141.28)  487.28                80
 10/24/2025   10:30:45   (   0.00,-136.99) (  -0.05,-136.73)   29.50                80
 10/26/2025   22:36:33   (  -0.00,-136.98) (  -0.13,-137.49)   57.80                80
 10/27/2025   22:15:06   (   0.00,-136.97) (   0.88,-132.95)  458.30                80
 10/29/2025   10:39:31   (   0.00,-136.95) (   0.31,-138.20)  143.18                80
 10/30/2025   10:18:05   (  -0.00,-136.94) (  -0.76,-133.67)  372.62                80
 10/31/2025   22:42:39   (  -0.00,-136.92) (  -0.47,-138.95)  232.13                80
 11/01/2025   22:21:12   (  -0.00,-136.91) (   0.55,-134.42)  283.51                80
 11/03/2025   10:45:36   (   0.01,-136.87) (   0.63,-139.67)  318.46                80
 11/04/2025   10:24:10   (   0.01,-136.85) (  -0.39,-135.13)  196.72                80