Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 10 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)
 10/25/2019   10:49:01   (  -0.01,-137.20) (   0.66,-140.25)  346.80                80
 10/26/2019   10:32:46   (  -0.01,-137.20) (  -0.35,-135.67)  174.30                80
 10/27/2019   22:51:46   (   0.01,-137.20) (  -0.82,-140.91)  423.11                80
 10/28/2019   22:35:31   (   0.00,-137.19) (   0.19,-136.34)   97.71                80
 10/30/2019   10:54:22   (  -0.00,-137.18) (   0.97,-141.54)  496.61                80
 10/31/2019   10:38:06   (  -0.00,-137.17) (  -0.04,-136.96)   23.71                80
 11/02/2019   22:38:11   (   0.00,-137.15) (  -0.10,-137.63)   54.87                80
 11/03/2019   22:21:56   (   0.00,-137.13) (   0.92,-133.06)  465.07                80
 11/05/2019   10:40:47   (  -0.01,-137.11) (   0.25,-138.26)  130.53                80
 11/06/2019   10:24:32   (  -0.01,-137.10) (  -0.76,-133.68)  389.17                80