Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/15/2019   10:54:09   (   0.00,-137.21) (   0.81,-140.84)  412.96                80
 11/16/2019   10:32:33   (   0.01,-137.21) (  -0.21,-136.26)  107.82                80
 11/17/2019   22:54:13   (  -0.01,-137.19) (  -0.98,-141.49)  490.50                80
 11/18/2019   22:37:57   (  -0.01,-137.18) (   0.04,-136.92)   29.95                80
 11/21/2019   10:40:34   (   0.01,-137.16) (   0.07,-137.56)   44.60                80
 11/22/2019   10:18:59   (   0.01,-137.15) (  -0.95,-132.98)  475.44                80
 11/23/2019   22:40:38   (  -0.01,-137.12) (  -0.22,-138.22)  123.95                80
 11/24/2019   22:24:21   (  -0.01,-137.11) (   0.74,-133.63)  395.91                80
 11/26/2019   10:45:54   (   0.02,-137.09) (   0.39,-138.84)  199.56                80
 11/27/2019   10:24:18   (   0.02,-137.07) (  -0.62,-134.26)  319.76                80