Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 22.  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)
 11/22/2023   22:32:50   (  -0.01,-137.00) (  -0.17,-137.69)   78.45                80
 11/23/2023   22:16:47   (  -0.01,-137.00) (   0.86,-133.16)  437.57                80
 11/25/2023   10:35:56   (   0.01,-137.00) (   0.31,-138.44)  163.24                80
 11/26/2023   10:19:51   (   0.01,-137.00) (  -0.67,-133.90)  352.35                80
 11/27/2023   22:39:09   (  -0.01,-136.98) (  -0.52,-139.21)  254.55                80
 11/28/2023   22:23:05   (  -0.01,-136.97) (   0.52,-134.69)  260.61                80
 11/30/2023   10:42:14   (   0.00,-136.96) (   0.70,-139.95)  341.43                80
 12/01/2023   10:26:10   (   0.00,-136.95) (  -0.35,-135.43)  173.42                80
 12/02/2023   22:45:27   (   0.00,-136.93) (  -0.83,-140.74)  434.28                80
 12/03/2023   22:29:23   (   0.01,-136.91) (   0.16,-136.21)   80.46                80
 12/06/2023   10:29:48   (  -0.01,-136.89) (  -0.01,-136.95)    7.64                80