Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 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)
 10/09/2020   10:19:13   (  -0.13,-128.43) (   0.66,-132.04)  410.45                80
 10/10/2020   10:02:57   (  -0.14,-128.43) (  -0.36,-127.46)  111.02                80
 10/11/2020   22:24:35   (   0.13,-128.40) (  -0.82,-132.68)  487.55                80
 10/12/2020   22:02:58   (   0.14,-128.39) (   0.20,-128.10)   33.40                80
 10/15/2020   10:05:31   (  -0.14,-128.38) (  -0.09,-128.71)   36.89                80
 10/16/2020   09:49:15   (  -0.14,-128.37) (  -1.12,-124.13)  484.14                80
 10/17/2020   22:10:52   (   0.13,-128.33) (  -0.12,-129.34)  115.12                80
 10/18/2020   21:49:16   (   0.14,-128.32) (   0.91,-124.76)  405.21                80
 10/20/2020   10:13:25   (  -0.13,-128.30) (   0.23,-129.95)  187.32                80
 10/21/2020   09:51:48   (  -0.14,-128.29) (  -0.80,-125.37)  332.74                80