Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/12/2020   10:30:01   (  -0.03,-137.20) (  -0.41,-135.45)  199.10                80
 04/13/2020   22:51:39   (   0.02,-137.19) (  -0.77,-140.68)  397.60                80
 04/14/2020   22:35:24   (   0.02,-137.19) (   0.28,-136.11)  123.51                80
 04/16/2020   10:56:54   (  -0.01,-137.18) (   0.92,-141.30)  470.06                80
 04/17/2020   10:35:19   (  -0.01,-137.17) (  -0.12,-136.72)   50.69                80
 04/19/2020   22:38:00   (   0.01,-137.14) (  -0.06,-137.36)   26.32                80
 04/20/2020   22:21:45   (   0.01,-137.13) (   0.99,-132.79)  494.33                80
 04/22/2020   10:43:15   (  -0.01,-137.11) (   0.22,-137.98)  100.12                80
 04/23/2020   10:21:40   (  -0.01,-137.09) (  -0.84,-133.41)  419.91                80
 04/24/2020   22:43:18   (   0.01,-137.06) (  -0.34,-138.63)  179.19                80
 04/25/2020   22:27:02   (   0.01,-137.04) (   0.65,-134.05)  340.49                80