Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 7 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/06/2019   10:52:30   (  -0.02,-137.21) (   0.66,-140.36)  359.00                80
 07/07/2019   10:33:35   (  -0.01,-137.21) (  -0.33,-135.79)  161.73                80
 07/08/2019   22:52:35   (   0.02,-137.18) (  -0.86,-141.03)  438.42                80
 07/09/2019   22:36:21   (   0.02,-137.18) (   0.19,-136.46)   82.17                80
 07/12/2019   10:36:18   (  -0.02,-137.18) (  -0.03,-137.09)    9.59                80
 07/14/2019   22:39:04   (   0.02,-137.13) (  -0.10,-137.77)   72.06                80
 07/15/2019   22:22:48   (   0.02,-137.12) (   0.90,-133.19)  447.69                80
 07/17/2019   10:41:40   (  -0.03,-137.12) (   0.27,-138.40)  146.36                80
 07/18/2019   10:25:26   (  -0.02,-137.10) (  -0.77,-133.83)  373.07                80