Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 3 24.  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)
 03/25/2023   10:30:22   (   0.01,-137.00) (  -0.04,-136.83)   19.53                80
 03/27/2023   22:33:31   (   0.00,-136.98) (  -0.12,-137.60)   70.91                80
 03/28/2023   22:17:24   (   0.00,-136.97) (   0.86,-133.06)  444.92                80
 03/30/2023   10:36:31   (  -0.00,-136.96) (   0.29,-138.33)  156.06                80
 03/31/2023   10:20:24   (   0.00,-136.95) (  -0.69,-133.79)  359.56                80
 04/01/2023   22:39:38   (  -0.01,-136.92) (  -0.48,-139.09)  247.23                80
 04/02/2023   22:23:32   (  -0.02,-136.90) (   0.51,-134.55)  268.45                80
 04/04/2023   10:45:17   (   0.00,-136.89) (   0.68,-139.81)  333.58                80
 04/05/2023   10:23:52   (  -0.01,-136.87) (  -0.38,-135.28)  181.32                80
 04/06/2023   22:45:45   (   0.02,-136.83) (  -0.83,-140.58)  426.65                80