Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 7 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/04/2019   09:49:50   (  -0.11,-127.76) (  -0.78,-124.91)  324.88                80
 07/05/2019   22:08:51   (   0.14,-127.70) (  -0.41,-130.15)  279.78                80
 07/06/2019   21:52:35   (   0.13,-127.66) (   0.57,-125.57)  237.51                80
 07/08/2019   10:11:27   (  -0.15,-127.61) (   0.58,-130.78)  362.58                80
 07/09/2019   09:55:13   (  -0.14,-127.57) (  -0.47,-126.22)  154.27                80
 07/10/2019   22:14:13   (   0.16,-127.49) (  -0.71,-131.46)  451.46                80
 07/11/2019   21:57:58   (   0.16,-127.45) (   0.28,-126.88)   65.39                80
 07/14/2019   10:00:36   (  -0.17,-127.35) (  -0.16,-127.52)   18.89                80
 07/15/2019   09:41:40   (  -0.16,-127.31) (  -1.15,-122.94)  497.42                80
 07/16/2019   22:00:40   (   0.19,-127.22) (  -0.02,-128.19)  109.39                80
 07/17/2019   21:44:25   (   0.18,-127.18) (   0.97,-123.61)  406.91                80