Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/07/2020   10:14:04   (  -0.34,-128.40) (   0.21,-130.78)  271.04                80
 03/08/2020   09:52:28   (  -0.34,-128.39) (  -0.83,-126.20)  249.38                80
 03/09/2020   22:14:07   (   0.33,-128.39) (  -0.35,-131.43)  346.89                80
 03/10/2020   21:57:52   (   0.34,-128.38) (   0.70,-126.86)  173.59                80
 03/12/2020   10:19:22   (  -0.33,-128.35) (   0.48,-132.05)  422.25                80
 03/13/2020   09:57:46   (  -0.33,-128.33) (  -0.50,-127.47)   97.67                80
 03/14/2020   22:19:25   (   0.32,-128.32) (  -0.66,-132.70)  499.70                80
 03/15/2020   22:00:30   (   0.33,-128.30) (   0.38,-128.13)   20.25                80
 03/18/2020   10:05:43   (  -0.31,-128.24) (  -0.18,-128.73)   56.85                80
 03/19/2020   09:44:08   (  -0.32,-128.22) (  -1.22,-124.16)  462.44                80