Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 8 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)
 08/01/2023   08:31:10   (  -0.04,-104.72) (   0.35,-106.50)  203.05                80
 08/02/2023   08:09:43   (  -0.04,-104.72) (  -0.63,-101.96)  313.96                80
 08/03/2023   20:31:38   (   0.04,-104.70) (  -0.51,-107.27)  291.88                80
 08/04/2023   20:15:32   (   0.04,-104.71) (   0.46,-102.72)  225.83                80
 08/06/2023   08:37:18   (  -0.04,-104.75) (   0.70,-107.99)  370.11                80
 08/07/2023   08:15:53   (  -0.04,-104.75) (  -0.33,-103.46)  147.34                80
 08/08/2023   20:37:47   (   0.05,-104.73) (  -0.85,-108.76)  458.70                80
 08/09/2023   20:21:42   (   0.05,-104.74) (   0.19,-104.23)   59.01                80
 08/12/2023   08:24:41   (  -0.06,-104.79) (  -0.01,-104.96)   19.34                80
 08/13/2023   08:03:16   (  -0.06,-104.79) (  -1.05,-100.43)  498.03                80
 08/14/2023   20:25:10   (   0.07,-104.77) (  -0.12,-105.73)  108.21                80