Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 7 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/09/2019   09:55:12   (  -0.14,-127.57) (  -0.42,-126.21)  154.64                80
 07/10/2019   22:14:13   (   0.16,-127.50) (  -0.71,-131.46)  451.32                80
 07/11/2019   21:57:58   (   0.16,-127.46) (   0.28,-126.88)   65.56                80
 07/14/2019   10:00:36   (  -0.17,-127.36) (  -0.16,-127.52)   18.43                80
 07/15/2019   09:41:40   (  -0.16,-127.31) (  -1.15,-122.94)  497.91                80
 07/16/2019   22:00:41   (   0.19,-127.23) (  -0.02,-128.18)  109.18                80
 07/17/2019   21:44:25   (   0.18,-127.18) (   0.96,-123.60)  407.16                80
 07/19/2019   10:03:18   (  -0.20,-127.12) (   0.15,-128.83)  193.33                80
 07/20/2019   09:47:03   (  -0.19,-127.07) (  -0.83,-124.25)  322.57                80
 07/21/2019   22:06:03   (   0.22,-126.98) (  -0.33,-129.49)  285.52                80