Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 5 5.  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)
 05/06/2023   10:44:45   (  -0.01,-137.00) (   0.60,-139.75)  313.00                80
 05/07/2023   10:23:20   (  -0.01,-136.99) (  -0.39,-135.21)  202.24                80
 05/08/2023   22:45:18   (   0.01,-136.98) (  -0.79,-140.52)  404.59                80
 05/09/2023   22:29:13   (   0.01,-136.96) (   0.20,-135.99)  110.21                80
 05/11/2023   10:51:02   (  -0.01,-136.94) (   0.99,-141.26)  492.98                80
 05/12/2023   10:29:38   (  -0.00,-136.93) (  -0.06,-136.75)   21.60                80
 05/14/2023   22:32:50   (   0.00,-136.89) (  -0.17,-137.51)   71.89                80
 05/15/2023   22:16:46   (   0.00,-136.87) (   0.89,-133.00)  442.57                80
 05/17/2023   10:38:35   (  -0.00,-136.85) (   0.29,-138.27)  161.19                80
 05/18/2023   10:17:10   (  -0.00,-136.83) (  -0.71,-133.74)  352.81                80