Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 2 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/18/2020   10:55:21   (   0.03,-137.20) (   0.91,-141.02)  436.14                80
 02/19/2020   10:33:46   (   0.04,-137.19) (  -0.13,-136.45)   84.74                80
 02/21/2020   22:39:09   (  -0.04,-137.18) (  -0.03,-137.10)    8.50                80
 02/24/2020   10:41:44   (   0.04,-137.15) (   0.15,-137.73)   65.68                80
 02/25/2020   10:20:08   (   0.04,-137.14) (  -0.83,-133.14)  454.70                80
 02/26/2020   22:41:48   (  -0.04,-137.12) (  -0.30,-138.38)  143.13                80
 02/27/2020   22:25:32   (  -0.04,-137.11) (   0.68,-133.80)  377.06                80
 02/29/2020   10:47:02   (   0.04,-137.08) (   0.49,-138.99)  218.63                80
 03/01/2020   10:25:26   (   0.05,-137.06) (  -0.55,-134.42)  300.98                80