Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 12 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)
 12/11/2024   22:19:45   (   0.00,-137.02) (   0.82,-133.28)  426.01                80
 12/13/2024   10:41:31   (  -0.00,-137.02) (   0.36,-138.54)  174.07                80
 12/14/2024   10:20:06   (  -0.00,-137.02) (  -0.67,-134.01)  342.52                80
 12/15/2024   22:42:00   (  -0.00,-137.01) (  -0.51,-139.31)  261.79                80
 12/16/2024   22:25:55   (  -0.00,-137.01) (   0.53,-134.78)  254.71                80
 12/18/2024   10:47:40   (   0.01,-137.00) (   0.70,-140.04)  345.99                80
 12/19/2024   10:26:15   (   0.01,-137.00) (  -0.34,-135.51)  170.38                80
 12/20/2024   22:48:08   (  -0.01,-136.99) (  -0.88,-140.80)  434.23                80
 12/21/2024   22:32:02   (  -0.01,-136.99) (   0.17,-136.27)   82.11                80
 12/24/2024   10:32:22   (   0.01,-136.97) (  -0.00,-137.00)    4.02                80