Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/07/2019   22:43:32   (   0.00,-137.21) (  -0.38,-138.92)  194.77                80
 11/08/2019   22:27:17   (   0.00,-137.21) (   0.63,-134.34)  326.76                80
 11/10/2019   10:48:48   (  -0.00,-137.22) (   0.54,-139.54)  265.50                80
 11/11/2019   10:27:14   (  -0.00,-137.22) (  -0.53,-134.98)  255.58                80
 11/12/2019   22:48:53   (   0.00,-137.20) (  -0.67,-140.21)  342.82                80
 11/13/2019   22:32:37   (   0.00,-137.20) (   0.35,-135.64)  177.78                80
 11/15/2019   10:54:09   (   0.00,-137.19) (   0.83,-140.84)  416.07                80
 11/16/2019   10:32:33   (   0.01,-137.18) (  -0.18,-136.26)  103.95                80
 11/17/2019   22:54:13   (  -0.01,-137.14) (  -1.00,-141.49)  496.04                80
 11/18/2019   22:37:57   (  -0.02,-137.13) (   0.02,-136.92)   23.62                80
 11/21/2019   10:40:34   (   0.02,-137.09) (   0.10,-137.55)   52.47                80