Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 9 2.  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)
 09/03/2023   08:09:34   (   0.00,-104.71) (  -0.59,-101.95)  313.76                80
 09/04/2023   20:31:31   (  -0.00,-104.69) (  -0.58,-107.26)  293.29                80
 09/05/2023   20:15:27   (  -0.00,-104.69) (   0.42,-102.73)  223.08                80
 09/07/2023   08:37:15   (   0.00,-104.72) (   0.75,-108.01)  375.17                80
 09/08/2023   08:15:51   (   0.00,-104.72) (  -0.25,-103.48)  140.94                80
 09/09/2023   20:37:48   (  -0.01,-104.69) (  -0.90,-108.79)  466.55                80
 09/10/2023   20:21:44   (  -0.01,-104.69) (   0.11,-104.26)   50.01                80
 09/13/2023   08:24:46   (   0.01,-104.73) (   0.10,-104.99)   31.00                80
 09/14/2023   08:03:22   (   0.01,-104.73) (  -0.91,-100.46)  485.63                80
 09/15/2023   20:25:19   (  -0.02,-104.71) (  -0.23,-105.78)  121.40                80