Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/25/2020   10:22:24   (  -0.36,-128.44) (   0.60,-132.82)  499.32                80
 02/26/2020   10:00:47   (  -0.36,-128.44) (  -0.38,-128.23)   22.82                80
 02/28/2020   22:03:32   (   0.36,-128.46) (   0.29,-128.90)   49.51                80
 02/29/2020   21:47:16   (   0.36,-128.46) (   1.27,-124.32)  472.21                80
 03/02/2020   10:08:46   (  -0.36,-128.44) (  -0.09,-129.51)  122.99                80
 03/03/2020   09:47:10   (  -0.35,-128.43) (  -1.13,-124.94)  398.02                80
 03/04/2020   22:08:50   (   0.35,-128.44) (  -0.05,-130.17)  197.44                80
 03/05/2020   21:52:34   (   0.34,-128.43) (   0.99,-125.59)  323.27                80
 03/07/2020   10:14:05   (  -0.34,-128.39) (   0.19,-130.79)  272.90                80
 03/08/2020   09:52:29   (  -0.34,-128.38) (  -0.84,-126.21)  247.27                80
 03/09/2020   22:14:07   (   0.33,-128.37) (  -0.38,-131.43)  349.26                80