Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 9 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)
 09/08/2020   10:06:39   (  -0.08,-128.04) (   0.13,-129.09)  119.05                80
 09/09/2020   09:50:22   (  -0.08,-128.07) (  -0.89,-124.51)  406.12                80
 09/10/2020   22:12:01   (   0.09,-128.06) (  -0.27,-129.74)  190.65                80
 09/11/2020   21:50:24   (   0.09,-128.08) (   0.75,-125.15)  333.89                80
 09/13/2020   10:11:55   (  -0.10,-128.16) (   0.38,-130.35)  249.21                80
 09/14/2020   09:55:38   (  -0.10,-128.19) (  -0.64,-125.77)  275.11                80
 09/15/2020   22:17:16   (   0.11,-128.17) (  -0.53,-131.00)  322.49                80
 09/16/2020   21:55:40   (   0.11,-128.19) (   0.49,-126.41)  201.50                80
 09/18/2020   10:17:10   (  -0.11,-128.26) (   0.64,-131.61)  382.44                80
 09/19/2020   10:00:54   (  -0.11,-128.27) (  -0.38,-127.03)  141.50                80
 09/20/2020   22:22:32   (   0.11,-128.25) (  -0.78,-132.26)  456.56                80