Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 1 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/04/2020   10:04:20   (  -0.05,-128.35) (   0.11,-129.12)   86.97                80
 01/05/2020   09:48:04   (  -0.04,-128.37) (  -0.92,-124.54)  436.31                80
 01/06/2020   22:07:04   (   0.05,-128.36) (  -0.26,-129.78)  161.49                80
 01/07/2020   21:50:48   (   0.04,-128.37) (   0.77,-125.20)  361.20                80
 01/09/2020   10:09:40   (  -0.04,-128.40) (   0.38,-130.40)  227.50                80
 01/10/2020   09:53:23   (  -0.04,-128.41) (  -0.59,-125.82)  294.84                80
 01/11/2020   22:12:23   (   0.04,-128.39) (  -0.54,-131.06)  304.19                80
 01/12/2020   21:56:08   (   0.04,-128.39) (   0.49,-126.49)  217.57                80
 01/14/2020   10:14:58   (  -0.04,-128.42) (   0.72,-131.68)  372.49                80
 01/15/2020   09:58:43   (  -0.04,-128.42) (  -0.31,-127.10)  149.23                80
 01/16/2020   22:20:23   (   0.05,-128.39) (  -0.82,-132.35)  450.17                80
 01/17/2020   22:01:28   (   0.04,-128.39) (   0.21,-127.77)   71.26                80