Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 10 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/05/2019   10:30:17   (  -0.02,-137.21) (  -0.51,-135.07)  244.17                80
 10/06/2019   22:51:57   (   0.02,-137.20) (  -0.69,-140.30)  353.99                80
 10/07/2019   22:30:22   (   0.02,-137.20) (   0.38,-135.74)  167.36                80
 10/09/2019   10:51:53   (  -0.02,-137.21) (   0.84,-140.93)  424.46                80
 10/10/2019   10:35:38   (  -0.01,-137.21) (  -0.23,-136.37)   96.83                80
 10/12/2019   22:38:23   (   0.00,-137.20) (   0.04,-137.03)   19.15                80
 10/15/2019   10:38:19   (   0.01,-137.19) (   0.11,-137.66)   52.87                80
 10/16/2019   10:22:04   (   0.02,-137.18) (  -0.90,-133.08)  467.60                80
 10/17/2019   22:43:44   (  -0.03,-137.16) (  -0.28,-138.32)  132.52                80
 10/18/2019   22:22:08   (  -0.03,-137.14) (   0.73,-133.74)  387.11                80