Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 8 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/24/2019   10:22:33   (  -0.03,-137.21) (  -0.81,-133.82)  386.91                80
 08/25/2019   22:44:13   (   0.04,-137.21) (  -0.35,-139.06)  210.67                80
 08/26/2019   22:27:58   (   0.04,-137.20) (   0.64,-134.48)  309.83                80
 08/28/2019   10:49:30   (  -0.04,-137.19) (   0.51,-139.69)  285.12                80
 08/29/2019   10:27:55   (  -0.04,-137.18) (  -0.48,-135.12)  235.01                80
 08/30/2019   22:49:35   (   0.04,-137.17) (  -0.68,-140.36)  363.75                80
 08/31/2019   22:33:21   (   0.04,-137.16) (   0.37,-135.79)  156.25                80
 09/02/2019   10:54:52   (  -0.04,-137.14) (   0.83,-140.99)  439.28                80
 09/03/2019   10:33:17   (  -0.04,-137.13) (  -0.23,-136.43)   80.41                80
 09/05/2019   22:36:02   (   0.05,-137.09) (   0.05,-137.09)    0.61                80