Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/27/2020   10:24:04   (   0.01,-128.42) (   0.97,-132.79)  497.05                80
 07/28/2020   10:02:28   (   0.01,-128.42) (  -0.04,-128.21)   24.96                80
 07/30/2020   22:05:09   (  -0.01,-128.36) (  -0.10,-128.85)   55.33                80
 07/31/2020   21:48:53   (  -0.02,-128.36) (   0.91,-124.27)  466.41                80
 08/02/2020   10:10:23   (   0.02,-128.41) (   0.25,-129.46)  119.97                80
 08/03/2020   09:48:47   (   0.02,-128.40) (  -0.76,-124.88)  401.41                80
 08/04/2020   22:10:25   (  -0.02,-128.33) (  -0.39,-130.11)  201.45                80
 08/05/2020   21:54:09   (  -0.02,-128.33) (   0.62,-125.52)  320.02                80
 08/07/2020   10:15:39   (   0.01,-128.38) (   0.55,-130.72)  266.50                80
 08/08/2020   09:54:02   (   0.01,-128.37) (  -0.47,-126.13)  254.73                80