Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/29/2020   21:47:16   (   0.36,-128.46) (   1.29,-124.32)  472.37                80
 03/02/2020   10:08:46   (  -0.36,-128.44) (  -0.13,-129.51)  122.55                80
 03/03/2020   09:47:11   (  -0.35,-128.43) (  -1.16,-124.94)  398.47                80
 03/04/2020   22:08:50   (   0.35,-128.44) (  -0.02,-130.17)  197.18                80
 03/05/2020   21:52:34   (   0.35,-128.43) (   0.97,-125.58)  323.59                80
 03/07/2020   10:14:04   (  -0.34,-128.39) (   0.21,-130.78)  272.29                80
 03/08/2020   09:52:28   (  -0.34,-128.38) (  -0.83,-126.21)  247.91                80
 03/09/2020   22:14:08   (   0.33,-128.37) (  -0.34,-131.44)  348.80                80
 03/10/2020   21:57:51   (   0.34,-128.36) (   0.65,-126.85)  171.44                80
 03/12/2020   10:19:21   (  -0.33,-128.32) (   0.53,-132.04)  424.74                80
 03/13/2020   09:57:46   (  -0.33,-128.31) (  -0.51,-127.47)   94.93                80