Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 3 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)
 03/05/2023   22:46:18   (  -0.01,-137.00) (  -0.83,-140.64)  415.63                80
 03/06/2023   22:30:14   (  -0.01,-136.99) (   0.21,-136.12)  100.49                80
 03/08/2023   10:52:01   (   0.00,-137.00) (   0.96,-141.39)  499.90                80
 03/09/2023   10:30:35   (   0.00,-136.99) (  -0.03,-136.85)   15.91                80
 03/11/2023   22:33:46   (  -0.00,-136.96) (  -0.13,-137.63)   75.35                80
 03/12/2023   22:17:41   (   0.00,-136.95) (   0.87,-133.09)  439.80                80
 03/14/2023   10:39:27   (   0.00,-136.94) (   0.35,-138.36)  162.42                80
 03/15/2023   10:18:03   (   0.00,-136.92) (  -0.71,-133.83)  352.10                80
 03/16/2023   22:39:57   (  -0.00,-136.88) (  -0.53,-139.13)  256.68                80
 03/17/2023   22:23:52   (   0.00,-136.86) (   0.53,-134.60)  257.47                80