Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/17/2019   10:02:32   (   0.22,-128.15) (   0.19,-128.03)   13.99                80
 10/19/2019   22:02:38   (  -0.21,-128.16) (  -0.31,-128.70)   61.42                80
 10/20/2019   21:46:22   (  -0.22,-128.18) (   0.69,-124.13)  462.44                80
 10/22/2019   10:05:14   (   0.19,-128.26) (   0.46,-129.33)  122.39                80
 10/23/2019   09:48:59   (   0.20,-128.28) (  -0.60,-124.77)  401.00                80
 10/24/2019   22:08:00   (  -0.18,-128.26) (  -0.58,-130.01)  199.79                80
 10/25/2019   21:51:44   (  -0.19,-128.27) (   0.43,-125.43)  323.67                80
 10/27/2019   10:10:36   (   0.17,-128.35) (   0.67,-130.65)  261.31                80
 10/28/2019   09:54:21   (   0.18,-128.37) (  -0.33,-126.07)  261.77                80
 10/29/2019   22:13:21   (  -0.16,-128.33) (  -0.83,-131.31)  339.88                80