Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 6 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)
 06/17/2020   22:20:22   (  -0.01,-137.20) (   0.94,-132.94)  484.54                80
 06/19/2020   10:44:31   (   0.01,-137.20) (   0.23,-138.13)  107.07                80
 06/20/2020   10:22:56   (  -0.00,-137.19) (  -0.83,-133.56)  414.34                80
 06/21/2020   22:47:14   (   0.00,-137.18) (  -0.38,-138.78)  183.11                80
 06/22/2020   22:25:39   (   0.01,-137.17) (   0.69,-134.21)  337.89                80
 06/24/2020   10:49:48   (  -0.01,-137.16) (   0.49,-139.40)  255.24                80
 06/25/2020   10:28:12   (  -0.01,-137.15) (  -0.52,-134.82)  265.41                80
 06/26/2020   22:49:51   (   0.01,-137.12) (  -0.63,-140.05)  333.03                80
 06/27/2020   22:33:34   (   0.01,-137.11) (   0.38,-135.47)  187.41                80
 06/29/2020   10:55:04   (  -0.01,-137.09) (   0.80,-140.65)  406.62                80
 06/30/2020   10:36:07   (  -0.01,-137.07) (  -0.21,-136.07)  113.42                80