Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 4.  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)
 03/05/2023   08:26:22   (  -0.01,-104.70) (   0.11,-105.10)   46.22                80
 03/06/2023   08:04:58   (  -0.01,-104.70) (  -0.93,-100.58)  470.36                80
 03/07/2023   20:26:54   (   0.01,-104.71) (  -0.23,-105.89)  133.13                80
 03/08/2023   20:10:49   (   0.01,-104.72) (   0.76,-101.35)  383.83                80
 03/10/2023   08:32:36   (  -0.01,-104.72) (   0.41,-106.62)  216.64                80
 03/11/2023   08:11:10   (  -0.01,-104.72) (  -0.59,-102.09)  300.01                80
 03/12/2023   20:33:06   (   0.01,-104.73) (  -0.61,-107.39)  304.04                80
 03/13/2023   20:17:01   (   0.01,-104.73) (   0.44,-102.87)  212.55                80
 03/15/2023   08:38:48   (  -0.01,-104.73) (   0.77,-108.13)  388.41                80
 03/16/2023   08:17:23   (  -0.01,-104.72) (  -0.29,-103.61)  127.72                80
 03/17/2023   20:39:18   (   0.02,-104.72) (  -0.89,-108.91)  477.32                80