Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 8 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/18/2019   10:36:06   (  -0.04,-137.18) (  -0.08,-137.09)   11.31                80
 08/20/2019   22:38:51   (   0.05,-137.16) (  -0.08,-137.76)   67.97                80
 08/21/2019   22:22:36   (   0.05,-137.15) (   0.92,-133.18)  451.93                80
 08/23/2019   10:44:08   (  -0.05,-137.13) (   0.24,-138.39)  143.27                80
 08/24/2019   10:22:33   (  -0.05,-137.12) (  -0.81,-133.82)  375.96                80
 08/25/2019   22:44:13   (   0.06,-137.08) (  -0.40,-139.05)  225.45                80
 08/26/2019   22:27:58   (   0.06,-137.06) (   0.65,-134.49)  293.25                80
 08/28/2019   10:49:30   (  -0.07,-137.03) (   0.50,-139.70)  303.50                80
 08/29/2019   10:30:35   (  -0.07,-137.00) (  -0.49,-135.12)  214.79                80