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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/17/2019   22:54:13   (  -0.00,-137.20) (  -0.97,-141.50)  489.22                80
 11/18/2019   22:37:58   (   0.01,-137.20) (   0.05,-136.92)   31.36                80
 11/21/2019   10:40:34   (  -0.01,-137.18) (   0.06,-137.56)   42.98                80
 11/22/2019   10:18:59   (  -0.01,-137.17) (  -0.95,-132.98)  477.16                80
 11/23/2019   22:40:38   (   0.01,-137.15) (  -0.23,-138.21)  121.15                80
 11/24/2019   22:24:23   (   0.00,-137.14) (   0.79,-133.64)  398.90                80
 11/26/2019   10:45:54   (   0.01,-137.12) (   0.41,-138.84)  196.45                80
 11/27/2019   10:24:19   (   0.00,-137.10) (  -0.61,-134.26)  322.99                80
 11/28/2019   22:48:38   (  -0.01,-137.07) (  -0.56,-139.50)  276.71                80
 11/29/2019   22:27:02   (  -0.00,-137.05) (   0.46,-134.92)  242.45                80