Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 9.  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) (   0.69,-132.03)  410.39                80
 10/10/2020   10:02:56   (  -0.14,-128.43) (  -0.34,-127.45)  111.14                80
 10/11/2020   22:24:34   (   0.13,-128.40) (  -0.85,-132.67)  487.26                80
 10/12/2020   22:02:59   (   0.14,-128.39) (   0.23,-128.10)   33.89                80
 10/15/2020   10:08:11   (  -0.14,-128.38) (  -0.06,-128.70)   36.48                80
 10/16/2020   09:49:14   (  -0.14,-128.37) (  -1.09,-124.12)  484.46                80
 10/17/2020   22:10:53   (   0.13,-128.34) (  -0.10,-129.34)  114.56                80
 10/18/2020   21:49:16   (   0.14,-128.32) (   0.93,-124.76)  405.75                80
 10/20/2020   10:13:25   (  -0.13,-128.31) (   0.21,-129.95)  186.88                80
 10/21/2020   09:51:49   (  -0.14,-128.29) (  -0.82,-125.37)  333.25                80
 10/22/2020   22:16:06   (   0.13,-128.25) (  -0.42,-130.58)  266.54                80