Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 6 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/16/2020   22:41:58   (  -0.01,-137.18) (  -0.10,-137.52)   39.49                80
 06/17/2020   22:20:23   (  -0.00,-137.17) (   0.97,-132.95)  481.69                80
 06/19/2020   10:44:32   (  -0.00,-137.16) (   0.21,-138.14)  111.55                80
 06/20/2020   10:22:55   (  -0.01,-137.15) (  -0.80,-133.55)  409.03                80
 06/21/2020   22:44:35   (   0.01,-137.12) (  -0.36,-138.79)  189.35                80
 06/22/2020   22:28:18   (   0.01,-137.11) (   0.65,-134.20)  330.86                80
 06/24/2020   10:49:47   (  -0.01,-137.08) (   0.53,-139.39)  263.82                80
 06/25/2020   10:28:12   (  -0.01,-137.06) (  -0.53,-134.82)  256.00                80
 06/26/2020   22:49:50   (   0.00,-137.03) (  -0.67,-140.04)  343.54                80
 06/27/2020   22:33:34   (   0.00,-137.01) (   0.34,-135.46)  176.05                80