Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 8 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/07/2019   10:46:56   (  -0.04,-137.20) (   0.37,-139.05)  210.79                80
 08/08/2019   10:25:21   (  -0.04,-137.20) (  -0.62,-134.47)  309.63                80
 08/09/2019   22:47:01   (   0.04,-137.18) (  -0.53,-139.72)  289.77                80
 08/10/2019   22:30:46   (   0.05,-137.17) (   0.47,-135.14)  230.31                80
 08/12/2019   10:49:39   (  -0.05,-137.16) (   0.65,-140.36)  364.40                80
 08/13/2019   10:33:24   (  -0.05,-137.15) (  -0.35,-135.78)  155.33                80
 08/14/2019   22:52:24   (   0.06,-137.12) (  -0.80,-141.03)  445.04                80
 08/15/2019   22:36:08   (   0.06,-137.11) (   0.20,-136.45)   74.57                80
 08/18/2019   10:38:46   (  -0.06,-137.08) (  -0.08,-137.09)    2.48                80