Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/04/2020   22:24:48   (   0.01,-137.19) (   0.81,-133.56)  413.51                80
 04/06/2020   10:46:19   (  -0.01,-137.19) (   0.33,-138.76)  178.85                80
 04/07/2020   10:24:43   (  -0.01,-137.18) (  -0.66,-134.18)  342.01                80
 04/08/2020   22:46:21   (   0.01,-137.16) (  -0.52,-139.40)  256.49                80
 04/09/2020   22:30:06   (   0.02,-137.15) (   0.53,-134.83)  264.14                80
 04/11/2020   10:51:37   (  -0.02,-137.14) (   0.61,-140.03)  329.22                80
 04/12/2020   10:30:00   (  -0.02,-137.13) (  -0.38,-135.45)  190.84                80
 04/13/2020   22:51:39   (   0.01,-137.09) (  -0.79,-140.68)  409.03                80
 04/14/2020   22:35:22   (   0.01,-137.07) (   0.21,-136.09)  110.99                80
 04/16/2020   10:56:54   (  -0.01,-137.06) (   0.94,-141.29)  482.89                80
 04/17/2020   10:35:17   (  -0.00,-137.04) (  -0.06,-136.71)   36.82                80