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)
 08/23/2023   08:15:44   (   0.01,-104.72) (  -0.29,-103.43)  146.73                80
 08/24/2023   20:37:40   (  -0.01,-104.69) (  -0.95,-108.73)  461.58                80
 08/25/2023   20:21:37   (  -0.02,-104.69) (   0.10,-104.21)   54.29                80
 08/28/2023   08:24:41   (   0.03,-104.71) (   0.06,-104.96)   28.71                80
 08/29/2023   08:03:17   (   0.03,-104.70) (  -0.93,-100.43)  486.89                80
 08/30/2023   20:25:13   (  -0.03,-104.67) (  -0.30,-105.73)  121.71                80
 08/31/2023   20:09:10   (  -0.03,-104.67) (   0.75,-101.21)  394.36                80
 09/02/2023   08:30:58   (   0.03,-104.70) (   0.44,-106.48)  203.26                80
 09/03/2023   08:09:34   (   0.03,-104.70) (  -0.56,-101.95)  312.63                80
 09/04/2023   20:31:31   (  -0.03,-104.66) (  -0.61,-107.26)  296.00                80
 09/05/2023   20:15:26   (  -0.03,-104.66) (   0.39,-102.73)  220.13                80