Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 9 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/09/2020   09:50:23   (  -0.08,-128.07) (  -0.91,-124.51)  406.14                80
 09/10/2020   22:12:00   (   0.09,-128.06) (  -0.31,-129.73)  190.22                80
 09/11/2020   21:50:25   (   0.09,-128.09) (   0.77,-125.16)  334.37                80
 09/13/2020   10:11:55   (  -0.10,-128.17) (   0.36,-130.36)  249.05                80
 09/14/2020   09:55:38   (  -0.10,-128.19) (  -0.66,-125.77)  275.33                80
 09/15/2020   22:17:17   (   0.11,-128.17) (  -0.50,-131.00)  321.85                80
 09/16/2020   21:55:40   (   0.11,-128.19) (   0.52,-126.42)  202.20                80
 09/18/2020   10:17:09   (  -0.11,-128.26) (   0.67,-131.61)  382.05                80
 09/19/2020   10:00:54   (  -0.11,-128.28) (  -0.41,-127.04)  141.98                80
 09/20/2020   22:22:31   (   0.11,-128.26) (  -0.81,-132.25)  455.69                80
 09/21/2020   22:00:56   (   0.11,-128.27) (   0.27,-127.68)   67.74                80