Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/08/2020   09:54:02   (  -0.01,-128.28) (  -0.46,-126.13)  244.30                80
 08/09/2020   22:15:40   (   0.01,-128.19) (  -0.69,-131.36)  360.54                80
 08/10/2020   21:59:24   (   0.01,-128.17) (   0.33,-126.78)  158.67                80
 08/12/2020   10:18:14   (  -0.01,-128.17) (   0.84,-131.97)  433.11                80
 08/13/2020   10:01:58   (  -0.01,-128.14) (  -0.17,-127.39)   85.49                80
 08/15/2020   22:04:40   (   0.02,-128.00) (   0.04,-128.03)    4.26                80
 08/18/2020   10:04:33   (  -0.02,-127.96) (   0.12,-128.64)   77.84                80
 08/19/2020   09:48:17   (  -0.02,-127.92) (  -0.90,-124.06)  439.94                80
 08/20/2020   22:07:14   (   0.02,-127.81) (  -0.30,-129.28)  167.65                80