Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/11/2019   10:13:25   (   0.23,-127.97) (   0.96,-131.30)  379.34                80
 10/12/2019   09:57:10   (   0.24,-128.00) (  -0.05,-126.72)  145.67                80
 10/13/2019   22:16:10   (  -0.22,-127.99) (  -1.14,-131.96)  453.25                80
 10/14/2019   21:59:56   (  -0.23,-128.02) (  -0.08,-127.40)   71.72                80
 10/17/2019   09:59:52   (   0.23,-128.15) (   0.22,-128.03)   14.15                80
 10/19/2019   22:02:38   (  -0.21,-128.15) (  -0.34,-128.70)   62.80                80
 10/20/2019   21:46:22   (  -0.22,-128.17) (   0.67,-124.12)  460.91                80
 10/22/2019   10:05:14   (   0.19,-128.26) (   0.43,-129.34)  122.99                80
 10/23/2019   09:48:59   (   0.20,-128.28) (  -0.58,-124.76)  400.26                80
 10/24/2019   22:07:59   (  -0.18,-128.24) (  -0.60,-130.00)  201.69                80