Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 03/27/2023   08:10:55   (   0.01,-104.75) (  -0.56,-102.06)  306.23                80
 03/28/2023   20:32:50   (  -0.01,-104.75) (  -0.57,-107.37)  297.48                80
 03/29/2023   20:16:44   (  -0.01,-104.75) (   0.41,-102.82)  219.38                80
 03/31/2023   08:38:30   (   0.01,-104.75) (   0.74,-108.10)  381.16                80
 04/01/2023   08:17:04   (   0.01,-104.75) (  -0.25,-103.55)  135.66                80
 04/02/2023   20:38:58   (  -0.02,-104.75) (  -0.93,-108.86)  467.78                80
 04/03/2023   20:22:51   (  -0.02,-104.75) (   0.06,-104.31)   49.50                80
 04/06/2023   08:25:52   (  -0.03,-104.75) (   0.01,-105.06)   34.46                80
 04/07/2023   08:04:26   (  -0.03,-104.75) (  -0.99,-100.52)  482.61                80
 04/08/2023   20:26:19   (   0.03,-104.75) (  -0.22,-105.81)  121.05                80