Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/02/2020   10:10:24   (  -0.01,-128.38) (   0.20,-129.47)  123.18                80
 08/03/2020   09:48:47   (  -0.01,-128.37) (  -0.81,-124.89)  397.76                80
 08/04/2020   22:10:25   (   0.01,-128.30) (  -0.40,-130.10)  205.67                80
 08/05/2020   21:54:08   (   0.01,-128.29) (   0.62,-125.52)  315.37                80
 08/07/2020   10:15:39   (  -0.01,-128.33) (   0.55,-130.71)  271.98                80
 08/08/2020   09:54:02   (  -0.00,-128.32) (  -0.47,-126.13)  248.81                80
 08/09/2020   22:15:40   (   0.01,-128.24) (  -0.68,-131.36)  355.30                80
 08/10/2020   21:59:24   (   0.00,-128.23) (   0.34,-126.78)  165.26                80
 08/12/2020   10:20:54   (  -0.01,-128.26) (   0.83,-131.97)  422.90                80
 08/13/2020   09:59:18   (  -0.00,-128.24) (  -0.19,-127.39)   97.13                80