Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 5 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/29/2020   10:42:22   (   0.00,-137.20) (   0.09,-137.68)   53.74                80
 05/30/2020   10:20:46   (  -0.00,-137.20) (  -0.91,-133.09)  467.92                80
 05/31/2020   22:45:05   (  -0.00,-137.19) (  -0.25,-138.33)  129.13                80
 06/01/2020   22:23:29   (   0.00,-137.19) (   0.76,-133.74)  392.20                80
 06/03/2020   10:47:39   (  -0.00,-137.18) (   0.37,-138.94)  200.31                80
 06/04/2020   10:26:03   (  -0.00,-137.17) (  -0.63,-134.36)  320.55                80
 06/05/2020   22:47:42   (   0.00,-137.15) (  -0.53,-139.59)  277.90                80
 06/06/2020   22:31:25   (   0.00,-137.13) (   0.47,-135.00)  242.67                80
 06/08/2020   10:50:15   (   0.00,-137.12) (   0.71,-140.19)  350.86                80
 06/09/2020   10:33:59   (   0.00,-137.10) (  -0.35,-135.62)  169.47                80
 06/10/2020   22:52:58   (  -0.01,-137.07) (  -0.86,-140.84)  429.79                80
 06/11/2020   22:36:42   (  -0.01,-137.05) (   0.20,-136.27)   90.42                80