Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 8 23.  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)
 08/24/2023   20:37:41   (   0.00,-104.70) (  -0.90,-108.74)  461.05                80
 08/25/2023   20:21:36   (  -0.00,-104.70) (   0.08,-104.21)   55.45                80
 08/28/2023   08:24:41   (   0.01,-104.73) (   0.07,-104.96)   26.08                80
 08/29/2023   08:03:18   (   0.01,-104.73) (  -0.98,-100.44)  490.04                80
 08/30/2023   20:25:14   (  -0.02,-104.71) (  -0.25,-105.74)  117.69                80
 08/31/2023   20:09:10   (  -0.02,-104.71) (   0.74,-101.21)  398.93                80
 09/02/2023   08:30:59   (   0.02,-104.75) (   0.39,-106.49)  197.90                80
 09/03/2023   08:09:34   (   0.02,-104.75) (  -0.60,-101.96)  318.59                80
 09/04/2023   20:31:32   (  -0.02,-104.73) (  -0.56,-107.27)  289.17                80
 09/05/2023   20:15:27   (  -0.02,-104.73) (   0.44,-102.74)  227.59                80