Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/20/2019   21:46:22   (  -0.22,-128.19) (   0.68,-124.12)  463.82                80
 10/22/2019   10:05:14   (   0.19,-128.27) (   0.41,-129.34)  121.28                80
 10/23/2019   09:48:59   (   0.20,-128.29) (  -0.60,-124.76)  402.34                80
 10/24/2019   22:07:59   (  -0.18,-128.28) (  -0.58,-130.00)  197.36                80
 10/25/2019   21:51:44   (  -0.19,-128.30) (   0.43,-125.43)  326.39                80
 10/27/2019   10:10:36   (   0.16,-128.37) (   0.67,-130.64)  258.86                80
 10/28/2019   09:54:21   (   0.18,-128.39) (  -0.34,-126.07)  264.49                80
 10/29/2019   22:13:21   (  -0.15,-128.36) (  -0.82,-131.31)  336.09                80
 10/30/2019   21:57:05   (  -0.17,-128.38) (   0.19,-126.73)  187.09                80
 11/01/2019   10:15:58   (   0.14,-128.45) (   0.92,-131.95)  398.92                80
 11/02/2019   09:59:42   (   0.15,-128.46) (  -0.09,-127.37)  123.78                80