Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 8 25.  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)
 08/25/2023   20:21:37   (  -0.01,-104.69) (   0.12,-104.22)   54.31                80
 08/28/2023   08:24:41   (   0.02,-104.71) (   0.10,-104.95)   28.47                80
 08/29/2023   08:03:17   (   0.02,-104.70) (  -0.95,-100.43)  487.16                80
 08/30/2023   20:25:14   (  -0.03,-104.67) (  -0.28,-105.73)  121.46                80
 08/31/2023   20:09:09   (  -0.03,-104.67) (   0.72,-101.20)  394.65                80
 09/02/2023   08:30:58   (   0.03,-104.70) (   0.41,-106.48)  202.78                80
 09/03/2023   08:09:34   (   0.03,-104.70) (  -0.58,-101.95)  313.16                80
 09/04/2023   20:31:30   (  -0.03,-104.67) (  -0.64,-107.25)  295.54                80
 09/05/2023   20:15:27   (  -0.03,-104.67) (   0.42,-102.74)  220.70                80
 09/07/2023   08:37:15   (   0.04,-104.70) (   0.76,-108.01)  376.25                80