Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 10 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/30/2019   10:54:22   (   0.00,-137.21) (   0.98,-141.53)  492.81                80
 10/31/2019   10:38:06   (   0.00,-137.21) (  -0.03,-136.96)   28.61                80
 11/02/2019   22:38:11   (  -0.00,-137.20) (  -0.11,-137.62)   48.24                80
 11/03/2019   22:21:56   (  -0.00,-137.20) (   0.90,-133.05)  472.73                80
 11/05/2019   10:40:48   (  -0.00,-137.20) (   0.21,-138.26)  120.60                80
 11/06/2019   10:21:53   (  -0.00,-137.19) (  -0.80,-133.69)  400.18                80
 11/07/2019   22:43:32   (  -0.00,-137.18) (  -0.40,-138.92)  198.27                80
 11/08/2019   22:27:16   (   0.00,-137.17) (   0.62,-134.34)  322.25                80
 11/10/2019   10:46:08   (  -0.00,-137.16) (   0.56,-139.54)  271.91                80
 11/11/2019   10:29:53   (  -0.00,-137.15) (  -0.51,-134.98)  248.21                80