Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 4 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2019   10:47:17   (   0.00,-137.20) (   0.41,-138.98)  202.94                80
 04/19/2019   10:25:42   (  -0.00,-137.20) (  -0.62,-134.42)  317.18                80
 04/20/2019   22:47:23   (   0.00,-137.17) (  -0.57,-139.65)  283.45                80
 04/21/2019   22:31:08   (   0.00,-137.17) (   0.46,-135.09)  236.75                80
 04/23/2019   10:52:41   (  -0.01,-137.18) (   0.67,-140.31)  356.38                80
 04/24/2019   10:31:07   (  -0.02,-137.16) (  -0.37,-135.74)  162.88                80
 04/25/2019   22:52:47   (   0.02,-137.12) (  -0.82,-140.98)  439.55                80
 04/26/2019   22:36:32   (   0.01,-137.11) (   0.15,-136.40)   80.19                80
 04/29/2019   10:36:30   (  -0.01,-137.10) (  -0.01,-137.04)    6.28                80