Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 6 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/07/2019   22:39:12   (  -0.01,-137.18) (  -0.16,-137.75)   65.01                80
 06/08/2019   22:22:58   (  -0.02,-137.18) (   0.88,-133.18)  455.84                80
 06/10/2019   10:44:29   (   0.02,-137.20) (   0.31,-138.38)  135.67                80
 06/11/2019   10:22:54   (   0.02,-137.19) (  -0.73,-133.81)  384.65                80
 06/12/2019   22:44:36   (  -0.02,-137.15) (  -0.44,-139.06)  217.26                80
 06/13/2019   22:28:21   (  -0.02,-137.14) (   0.60,-134.49)  302.84                80
 06/15/2019   10:49:52   (   0.01,-137.16) (   0.59,-139.69)  289.61                80
 06/16/2019   10:28:18   (   0.01,-137.14) (  -0.45,-135.13)  229.89                80
 06/17/2019   22:49:59   (  -0.00,-137.09) (  -0.71,-140.38)  373.48                80
 06/18/2019   22:33:44   (  -0.01,-137.08) (   0.27,-135.80)  145.98                80