Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/10/2020   10:02:57   (  -0.14,-128.43) (  -0.37,-127.46)  111.21                80
 10/11/2020   22:24:35   (   0.13,-128.41) (  -0.82,-132.68)  486.97                80
 10/12/2020   22:02:58   (   0.14,-128.40) (   0.21,-128.10)   34.07                80
 10/15/2020   10:08:10   (  -0.14,-128.39) (  -0.04,-128.70)   36.25                80
 10/16/2020   09:49:15   (  -0.14,-128.38) (  -1.12,-124.13)  484.90                80
 10/17/2020   22:10:52   (   0.13,-128.34) (  -0.12,-129.34)  113.98                80
 10/18/2020   21:49:16   (   0.14,-128.33) (   0.91,-124.76)  406.44                80
 10/20/2020   10:13:25   (  -0.13,-128.31) (   0.23,-129.95)  186.19                80
 10/21/2020   09:51:48   (  -0.14,-128.30) (  -0.80,-125.37)  333.96                80
 10/22/2020   22:16:07   (   0.13,-128.26) (  -0.38,-130.59)  265.62                80
 10/23/2020   21:54:30   (   0.14,-128.24) (   0.66,-126.01)  254.10                80