Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/19/2019   22:02:38   (  -0.21,-128.17) (  -0.32,-128.70)   60.83                80
 10/20/2019   21:46:22   (  -0.22,-128.19) (   0.69,-124.12)  463.11                80
 10/22/2019   10:05:15   (   0.19,-128.27) (   0.41,-129.34)  121.87                80
 10/23/2019   09:48:59   (   0.20,-128.29) (  -0.60,-124.77)  401.61                80
 10/24/2019   22:07:59   (  -0.18,-128.26) (  -0.58,-130.01)  198.71                80
 10/25/2019   21:51:44   (  -0.19,-128.28) (   0.43,-125.43)  324.85                80
 10/27/2019   10:10:36   (   0.17,-128.36) (   0.67,-130.65)  260.27                80
 10/28/2019   09:54:21   (   0.18,-128.38) (  -0.34,-126.07)  262.92                80
 10/29/2019   22:13:21   (  -0.16,-128.34) (  -0.83,-131.31)  338.28                80
 10/30/2019   21:57:06   (  -0.17,-128.36) (   0.19,-126.73)  184.73                80