Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 8 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/23/2019   10:44:08   (  -0.03,-137.21) (   0.23,-138.39)  134.16                80
 08/24/2019   10:22:32   (  -0.03,-137.21) (  -0.77,-133.81)  386.83                80
 08/25/2019   22:44:13   (   0.04,-137.20) (  -0.39,-139.05)  210.96                80
 08/26/2019   22:27:58   (   0.04,-137.20) (   0.66,-134.49)  309.49                80
 08/28/2019   10:49:31   (  -0.04,-137.19) (   0.49,-139.70)  285.42                80
 08/29/2019   10:27:55   (  -0.04,-137.18) (  -0.51,-135.12)  234.66                80
 08/30/2019   22:49:35   (   0.04,-137.16) (  -0.65,-140.36)  364.30                80
 08/31/2019   22:33:20   (   0.04,-137.15) (   0.34,-135.79)  155.63                80
 09/02/2019   10:54:52   (  -0.04,-137.13) (   0.80,-141.00)  439.81                80
 09/03/2019   10:33:17   (  -0.04,-137.12) (  -0.20,-136.42)   79.79                80