Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 8 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/02/2019   10:38:54   (  -0.03,-137.21) (   0.08,-137.75)   61.48                80
 08/03/2019   10:22:39   (  -0.03,-137.21) (  -0.92,-133.17)  459.51                80
 08/04/2019   22:41:39   (   0.04,-137.20) (  -0.23,-138.42)  138.32                80
 08/05/2019   22:25:23   (   0.04,-137.20) (   0.76,-133.84)  382.52                80
 08/07/2019   10:44:17   (  -0.04,-137.20) (   0.35,-139.06)  211.62                80
 08/08/2019   10:28:01   (  -0.04,-137.19) (  -0.64,-134.48)  308.81                80
 08/09/2019   22:47:01   (   0.05,-137.18) (  -0.50,-139.73)  290.17                80
 08/10/2019   22:30:46   (   0.05,-137.17) (   0.49,-135.15)  229.88                80
 08/12/2019   10:49:38   (  -0.06,-137.15) (   0.68,-140.35)  365.37                80
 08/13/2019   10:33:24   (  -0.06,-137.14) (  -0.37,-135.79)  154.37                80
 08/14/2019   22:52:23   (   0.07,-137.12) (  -0.83,-141.02)  445.56                80