Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/22/2020   22:17:09   (   0.36,-128.45) (  -0.48,-132.20)  427.52                80
 02/23/2020   22:00:53   (   0.36,-128.45) (   0.56,-127.62)   94.94                80
 02/25/2020   10:22:24   (  -0.36,-128.44) (   0.60,-132.82)  499.10                80
 02/26/2020   10:00:47   (  -0.36,-128.44) (  -0.38,-128.23)   23.17                80
 02/28/2020   22:03:32   (   0.36,-128.47) (   0.29,-128.90)   48.83                80
 02/29/2020   21:47:16   (   0.36,-128.47) (   1.27,-124.32)  473.01                80
 03/02/2020   10:08:46   (  -0.35,-128.44) (  -0.10,-129.51)  122.10                80
 03/03/2020   09:47:10   (  -0.35,-128.44) (  -1.14,-124.94)  399.01                80
 03/04/2020   22:08:50   (   0.35,-128.45) (  -0.04,-130.17)  196.16                80
 03/05/2020   21:52:34   (   0.34,-128.44) (   1.01,-125.60)  324.68                80