Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 19.  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) (  -0.33,-128.70)   60.48                80
 10/20/2019   21:46:22   (  -0.22,-128.19) (   0.68,-124.12)  463.52                80
 10/22/2019   10:05:14   (   0.19,-128.27) (   0.41,-129.34)  121.56                80
 10/23/2019   09:48:59   (   0.20,-128.29) (  -0.60,-124.76)  401.99                80
 10/24/2019   22:07:59   (  -0.18,-128.27) (  -0.58,-130.00)  197.98                80
 10/25/2019   21:51:44   (  -0.19,-128.29) (   0.43,-125.43)  325.67                80
 10/27/2019   10:10:36   (   0.17,-128.37) (   0.66,-130.65)  259.55                80
 10/28/2019   09:54:21   (   0.18,-128.38) (  -0.35,-126.07)  263.72                80
 10/29/2019   22:13:21   (  -0.16,-128.35) (  -0.82,-131.31)  337.12                80
 10/30/2019   21:57:05   (  -0.17,-128.37) (   0.20,-126.73)  185.97                80
 11/01/2019   10:15:58   (   0.14,-128.44) (   0.91,-131.95)  400.02                80