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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/07/2020   10:00:19   (   0.02,-128.28) (  -0.11,-127.75)   61.04                80
 07/09/2020   22:05:41   (  -0.03,-128.27) (  -0.08,-128.38)   14.54                80
 07/12/2020   10:08:16   (   0.03,-128.36) (   0.15,-129.01)   73.36                80
 07/13/2020   09:46:39   (   0.02,-128.38) (  -0.86,-124.43)  449.90                80
 07/14/2020   22:08:18   (  -0.02,-128.34) (  -0.33,-129.65)  150.17                80
 07/15/2020   21:52:02   (  -0.02,-128.35) (   0.74,-125.08)  372.93                80
 07/17/2020   10:13:33   (   0.01,-128.42) (   0.41,-130.28)  211.07                80
 07/18/2020   09:51:56   (   0.01,-128.43) (  -0.60,-125.69)  311.22                80
 07/19/2020   22:13:34   (   0.00,-128.37) (  -0.58,-130.92)  290.78                80
 07/20/2020   21:57:19   (   0.01,-128.37) (   0.49,-126.35)  231.37                80