Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 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)
 10/06/2019   10:08:02   (   0.26,-127.79) (   0.78,-129.98)  250.13                80
 10/07/2019   09:51:48   (   0.27,-127.82) (  -0.28,-125.41)  275.18                80
 10/08/2019   22:10:48   (  -0.25,-127.82) (  -0.91,-130.65)  323.63                80
 10/09/2019   21:54:34   (  -0.26,-127.85) (   0.15,-126.09)  201.78                80
 10/11/2019   10:13:25   (   0.23,-127.97) (   1.00,-131.29)  378.82                80
 10/12/2019   09:57:10   (   0.24,-128.01) (  -0.06,-126.73)  146.31                80
 10/13/2019   22:16:11   (  -0.22,-127.99) (  -1.13,-131.97)  453.24                80
 10/14/2019   21:59:56   (  -0.23,-128.03) (  -0.07,-127.40)   71.82                80
 10/17/2019   09:59:52   (   0.23,-128.17) (   0.22,-128.03)   15.18                80
 10/19/2019   22:02:38   (  -0.21,-128.16) (  -0.34,-128.70)   62.27                80