Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 10 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/22/2019   22:46:25   (   0.00,-137.21) (  -0.56,-139.61)  274.69                80
 10/23/2019   22:30:10   (   0.00,-137.21) (   0.51,-135.05)  246.50                80
 10/25/2019   10:51:42   (  -0.00,-137.20) (   0.65,-140.25)  347.04                80
 10/26/2019   10:30:06   (  -0.00,-137.20) (  -0.36,-135.68)  173.86                80
 10/27/2019   22:51:46   (   0.00,-137.19) (  -0.81,-140.92)  423.97                80
 10/28/2019   22:35:31   (  -0.00,-137.19) (   0.20,-136.34)   96.65                80
 10/30/2019   10:57:02   (  -0.00,-137.17) (   0.97,-141.54)  497.85                80
 10/31/2019   10:35:27   (   0.00,-137.16) (  -0.04,-136.97)   22.27                80
 11/02/2019   22:38:12   (   0.02,-137.13) (  -0.11,-137.63)   57.37                80
 11/03/2019   22:21:56   (   0.02,-137.12) (   0.90,-133.06)  462.36                80