Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 9 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)
 09/06/2020   21:45:08   (   0.08,-127.94) (   0.97,-123.88)  462.35                80
 09/08/2020   10:06:38   (  -0.08,-128.04) (   0.17,-129.08)  119.01                80
 09/09/2020   09:50:23   (  -0.08,-128.07) (  -0.91,-124.51)  406.19                80
 09/10/2020   22:12:00   (   0.09,-128.06) (  -0.31,-129.73)  190.78                80
 09/11/2020   21:50:24   (   0.09,-128.08) (   0.77,-125.16)  333.78                80
 09/13/2020   10:11:55   (  -0.10,-128.17) (   0.36,-130.36)  249.15                80
 09/14/2020   09:55:38   (  -0.10,-128.19) (  -0.66,-125.78)  275.21                80
 09/15/2020   22:17:17   (   0.11,-128.17) (  -0.50,-131.00)  322.59                80
 09/16/2020   21:55:40   (   0.11,-128.18) (   0.52,-126.42)  201.44                80
 09/18/2020   10:17:09   (  -0.11,-128.26) (   0.66,-131.61)  382.32                80
 09/19/2020   10:00:53   (  -0.11,-128.27) (  -0.36,-127.03)  141.68                80