Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 9 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/24/2019   10:35:48   (  -0.02,-137.20) (  -0.04,-137.04)   17.85                80
 09/26/2019   22:38:34   (   0.02,-137.19) (  -0.09,-137.71)   60.09                80
 09/27/2019   22:22:19   (   0.02,-137.18) (   0.91,-133.14)  460.30                80
 09/29/2019   10:41:10   (  -0.01,-137.16) (   0.25,-138.34)  134.45                80
 09/30/2019   10:24:55   (  -0.01,-137.15) (  -0.75,-133.76)  385.66                80
 10/01/2019   22:43:55   (  -0.00,-137.13) (  -0.44,-139.00)  213.24                80
 10/02/2019   22:27:39   (  -0.02,-137.12) (   0.57,-134.42)  306.80                80
 10/04/2019   10:49:11   (   0.02,-137.09) (   0.59,-139.63)  289.22                80
 10/05/2019   10:27:35   (   0.01,-137.08) (  -0.41,-135.05)  229.95                80
 10/06/2019   22:49:16   (  -0.01,-137.05) (  -0.72,-140.30)  370.45                80
 10/07/2019   22:33:01   (  -0.01,-137.03) (   0.29,-135.73)  148.53                80