Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 8 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/04/2019   22:41:39   (   0.04,-137.20) (  -0.23,-138.41)  138.40                80
 08/05/2019   22:25:23   (   0.04,-137.20) (   0.76,-133.84)  382.45                80
 08/07/2019   10:44:17   (  -0.04,-137.20) (   0.36,-139.06)  211.42                80
 08/08/2019   10:28:01   (  -0.04,-137.19) (  -0.63,-134.48)  309.01                80
 08/09/2019   22:47:02   (   0.05,-137.17) (  -0.52,-139.72)  290.26                80
 08/10/2019   22:30:46   (   0.05,-137.17) (   0.47,-135.14)  229.81                80
 08/12/2019   10:49:39   (  -0.06,-137.16) (   0.65,-140.36)  365.18                80
 08/13/2019   10:33:24   (  -0.06,-137.14) (  -0.34,-135.78)  154.55                80
 08/14/2019   22:52:24   (   0.06,-137.12) (  -0.81,-141.03)  445.70                80
 08/15/2019   22:36:09   (   0.06,-137.10) (   0.19,-136.45)   73.92                80