Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 9 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/06/2019   22:16:28   (  -0.37,-128.27) (  -1.22,-132.00)  425.91                80
 09/07/2019   22:00:14   (  -0.36,-128.25) (  -0.16,-127.44)   93.34                80
 09/10/2019   10:00:10   (   0.36,-128.23) (   0.30,-128.07)   18.74                80
 09/12/2019   22:02:55   (  -0.35,-128.15) (  -0.47,-128.73)   66.99                80
 09/13/2019   21:46:40   (  -0.35,-128.13) (   0.53,-124.16)  452.01                80
 09/15/2019   10:08:12   (   0.34,-128.13) (   0.60,-129.37)  141.66                80
 09/16/2019   09:46:37   (   0.35,-128.10) (  -0.40,-124.80)  376.80                80
 09/17/2019   22:08:17   (  -0.34,-128.02) (  -0.78,-130.04)  228.91                80
 09/18/2019   21:52:01   (  -0.34,-128.00) (   0.22,-125.46)  289.54                80