Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 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)
 11/24/2019   22:21:43   (   0.00,-137.24) (   0.80,-133.64)  410.29                80
 11/26/2019   10:45:54   (   0.00,-137.24) (   0.39,-138.84)  182.09                80
 11/27/2019   10:26:59   (   0.01,-137.24) (  -0.69,-134.27)  339.47                80
 11/28/2019   22:45:58   (  -0.01,-137.24) (  -0.54,-139.49)  257.47                80
 11/29/2019   22:29:42   (  -0.02,-137.24) (   0.48,-134.92)  263.77                80
 12/01/2019   10:51:15   (   0.02,-137.23) (   0.65,-140.13)  329.59                80
 12/02/2019   10:29:39   (   0.02,-137.23) (  -0.37,-135.56)  191.33                80
 12/03/2019   22:53:57   (  -0.02,-137.22) (  -0.84,-140.78)  406.35                80
 12/04/2019   22:32:22   (  -0.02,-137.21) (   0.18,-136.20)  114.37                80
 12/06/2019   10:56:34   (   0.03,-137.20) (   0.96,-141.42)  479.69                80
 12/07/2019   10:34:59   (   0.03,-137.19) (  -0.07,-136.84)   40.73                80