Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 2 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/06/2020   22:23:13   (  -0.04,-137.22) (   0.81,-133.27)  449.03                80
 02/08/2020   10:44:43   (   0.05,-137.22) (   0.34,-138.47)  142.44                80
 02/09/2020   10:23:08   (   0.05,-137.22) (  -0.70,-133.90)  378.87                80
 02/10/2020   22:44:47   (  -0.05,-137.21) (  -0.51,-139.12)  219.21                80
 02/11/2020   22:28:32   (  -0.05,-137.20) (   0.53,-134.55)  301.96                80
 02/13/2020   10:50:02   (   0.05,-137.20) (   0.62,-139.75)  290.25                80
 02/14/2020   10:28:27   (   0.05,-137.19) (  -0.42,-135.17)  230.52                80
 02/15/2020   22:50:06   (  -0.06,-137.17) (  -0.78,-140.40)  368.57                80
 02/16/2020   22:33:50   (  -0.06,-137.16) (   0.27,-135.83)  151.97                80
 02/18/2020   10:55:20   (   0.06,-137.15) (   0.94,-141.02)  441.23                80
 02/19/2020   10:33:44   (   0.07,-137.13) (  -0.11,-136.44)   78.87                80