Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/02/2020   10:10:23   (  -0.01,-128.38) (   0.23,-129.46)  123.28                80
 08/03/2020   09:48:47   (  -0.01,-128.37) (  -0.78,-124.88)  397.55                80
 08/04/2020   22:10:25   (   0.01,-128.30) (  -0.37,-130.11)  205.89                80
 08/05/2020   21:54:09   (   0.01,-128.29) (   0.64,-125.53)  315.13                80
 08/07/2020   10:15:39   (  -0.01,-128.33) (   0.52,-130.72)  272.41                80
 08/08/2020   09:54:03   (  -0.00,-128.31) (  -0.49,-126.14)  248.30                80
 08/09/2020   22:15:40   (   0.00,-128.24) (  -0.71,-131.35)  355.81                80
 08/10/2020   21:59:23   (   0.00,-128.22) (   0.30,-126.77)  164.69                80
 08/12/2020   10:19:53   (  -0.01,-128.25) (   0.80,-131.98)  423.75                18
 08/13/2020   09:59:18   (  -0.01,-128.24) (  -0.21,-127.39)   96.19                80