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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/08/2019   10:11:28   (  -0.15,-127.61) (   0.54,-130.79)  362.23                80
 07/09/2019   09:55:12   (  -0.14,-127.57) (  -0.44,-126.21)  154.64                80
 07/10/2019   22:14:13   (   0.16,-127.50) (  -0.74,-131.45)  451.15                80
 07/11/2019   21:57:58   (   0.16,-127.46) (   0.31,-126.88)   65.82                80
 07/14/2019   09:57:55   (  -0.17,-127.36) (  -0.13,-127.52)   17.96                80
 07/15/2019   09:41:40   (  -0.16,-127.31) (  -1.12,-122.94)  498.21                80
 07/16/2019   22:00:40   (   0.19,-127.23) (  -0.05,-128.18)  108.76                80
 07/17/2019   21:44:25   (   0.18,-127.18) (   1.00,-123.61)  407.66                80
 07/19/2019   10:03:18   (  -0.20,-127.13) (   0.17,-128.82)  192.85                80
 07/20/2019   09:47:02   (  -0.19,-127.08) (  -0.81,-124.24)  323.09                80