Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 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)
 08/07/2020   10:15:39   (  -0.01,-128.32) (   0.51,-130.72)  273.53                80
 08/08/2020   09:54:03   (  -0.01,-128.30) (  -0.50,-126.14)  247.01                80
 08/09/2020   22:15:40   (   0.01,-128.23) (  -0.70,-131.36)  356.86                80
 08/10/2020   21:59:24   (   0.01,-128.21) (   0.31,-126.77)  163.47                80
 08/12/2020   10:18:14   (  -0.01,-128.24) (   0.86,-131.97)  425.89                80
 08/13/2020   10:01:58   (  -0.01,-128.21) (  -0.22,-127.40)   93.89                80
 08/15/2020   22:04:39   (   0.01,-128.10) (   0.03,-128.03)    7.82                80
 08/18/2020   10:04:33   (  -0.02,-128.08) (   0.13,-128.64)   63.81                80
 08/19/2020   09:48:17   (  -0.01,-128.06) (  -0.89,-124.06)  455.13                80