Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 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)
 04/08/2020   10:07:56   (  -0.23,-127.58) (   0.12,-129.20)  183.67                80
 04/09/2020   09:46:20   (  -0.24,-127.54) (  -0.87,-124.61)  333.11                80
 04/10/2020   22:10:38   (   0.22,-127.50) (  -0.31,-129.84)  266.64                80
 04/11/2020   21:49:03   (   0.23,-127.46) (   0.74,-125.26)  250.34                80
 04/13/2020   10:13:13   (  -0.20,-127.36) (   0.46,-130.45)  351.26                80
 04/14/2020   09:51:36   (  -0.21,-127.32) (  -0.53,-125.87)  164.96                80
 04/15/2020   22:15:55   (   0.18,-127.26) (  -0.65,-131.09)  436.16                80
 04/16/2020   21:56:58   (   0.19,-127.22) (   0.34,-126.51)   80.51                80
 04/19/2020   09:56:53   (  -0.18,-127.08) (  -0.19,-127.12)    5.00                80
 04/21/2020   22:02:15   (   0.17,-126.97) (   0.01,-127.77)   90.53                80