Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 9 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)
 09/03/2020   10:04:03   (  -0.08,-127.89) (  -0.12,-127.83)    7.51                80
 09/05/2020   22:06:44   (   0.08,-127.91) (  -0.07,-128.46)   63.84                80
 09/06/2020   21:45:09   (   0.08,-127.94) (   1.01,-123.90)  461.85                80
 09/08/2020   10:06:39   (  -0.08,-128.05) (   0.14,-129.09)  118.26                80
 09/09/2020   09:50:22   (  -0.08,-128.08) (  -0.88,-124.51)  407.02                80
 09/10/2020   22:12:01   (   0.09,-128.06) (  -0.27,-129.74)  190.83                80
 09/11/2020   21:50:24   (   0.09,-128.09) (   0.75,-125.16)  333.80                80
 09/13/2020   10:11:55   (  -0.10,-128.18) (   0.39,-130.35)  247.93                80
 09/14/2020   09:55:38   (  -0.10,-128.20) (  -0.64,-125.77)  276.52                80