Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/28/2020   10:15:02   (  -0.06,-127.58) (   0.75,-131.13)  405.43                80
 08/29/2020   09:58:46   (  -0.07,-127.53) (  -0.27,-126.55)  111.61                80
 08/30/2020   22:17:44   (   0.07,-127.41) (  -0.88,-131.78)  496.70                80
 08/31/2020   22:01:28   (   0.07,-127.37) (   0.14,-127.19)   20.58                80
 09/03/2020   10:01:20   (  -0.08,-127.30) (   0.05,-127.79)   57.34                80
 09/04/2020   09:45:04   (  -0.07,-127.25) (  -0.97,-123.21)  459.64                80
 09/05/2020   22:04:01   (   0.08,-127.13) (  -0.24,-128.43)  149.05                80
 09/06/2020   21:47:45   (   0.08,-127.08) (   0.78,-123.85)  367.72                80
 09/08/2020   10:06:35   (  -0.08,-127.04) (   0.36,-129.04)  227.79                80
 09/09/2020   09:50:19   (  -0.08,-126.99) (  -0.66,-124.46)  288.45                80
 09/10/2020   22:09:16   (   0.09,-126.86) (  -0.55,-129.68)  321.64                80