Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 9 1.  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)
 09/02/2023   08:30:59   (  -0.00,-104.71) (   0.38,-106.49)  202.29                80
 09/03/2023   08:09:35   (  -0.00,-104.71) (  -0.61,-101.96)  313.87                80
 09/04/2023   20:31:32   (   0.00,-104.69) (  -0.56,-107.27)  293.66                80
 09/05/2023   20:15:27   (  -0.00,-104.69) (   0.44,-102.74)  222.76                80
 09/07/2023   08:37:16   (   0.00,-104.72) (   0.74,-108.01)  374.89                80
 09/08/2023   08:15:51   (   0.01,-104.72) (  -0.26,-103.48)  141.24                80
 09/09/2023   20:37:47   (  -0.01,-104.69) (  -0.96,-108.78)  466.72                80
 09/10/2023   20:21:44   (  -0.02,-104.69) (   0.10,-104.26)   49.87                80
 09/13/2023   08:24:48   (   0.02,-104.73) (   0.06,-105.01)   30.61                80
 09/14/2023   08:03:23   (   0.02,-104.74) (  -0.94,-100.48)  485.90                80