Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 1 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/30/2020   22:53:06   (  -0.04,-137.21) (  -0.92,-141.15)  449.52                80
 01/31/2020   22:34:11   (  -0.04,-137.21) (   0.11,-136.58)   71.74                80
 02/03/2020   10:36:45   (   0.05,-137.19) (   0.03,-137.20)    2.46                80
 02/05/2020   22:39:29   (  -0.06,-137.16) (  -0.21,-137.85)   78.76                80
 02/06/2020   22:23:14   (  -0.06,-137.15) (   0.82,-133.28)  441.24                80
 02/08/2020   10:44:44   (   0.06,-137.12) (   0.34,-138.47)  153.59                80
 02/09/2020   10:23:08   (   0.06,-137.10) (  -0.63,-133.89)  365.92                80
 02/10/2020   22:44:48   (  -0.07,-137.07) (  -0.52,-139.13)  234.25                80
 02/11/2020   22:25:52   (  -0.07,-137.05) (   0.51,-134.55)  285.04                80