Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2022 12 8.  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)
 12/09/2022   10:40:58   (  -0.01,-136.94) (   0.34,-138.50)  177.16                80
 12/10/2022   10:17:19   (  -0.00,-136.94) (  -0.79,-133.43)  400.31                80
 12/11/2022   22:35:53   (   0.00,-136.91) (  -0.20,-137.91)  113.54                80
 12/12/2022   22:17:34   (  -0.00,-136.91) (   0.92,-132.84)  463.91                80
 12/14/2022   10:35:53   (   0.01,-136.92) (   0.09,-137.26)   39.94                80
 12/16/2022   22:33:28   (  -0.01,-136.87) (   0.01,-136.67)   22.06                80
 12/18/2022   10:51:47   (   0.01,-136.88) (   0.94,-141.11)  481.81                80
 12/19/2022   10:28:08   (   0.01,-136.86) (  -0.15,-136.03)   94.67                80
 12/20/2022   22:46:42   (  -0.01,-136.81) (  -0.85,-140.52)  422.58                80
 12/21/2022   22:28:24   (  -0.01,-136.79) (   0.30,-135.45)  153.42                80