Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 11 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/20/2019   21:59:34   (  -0.06,-128.47) (   0.17,-127.34)  128.47                80
 11/22/2019   10:18:26   (   0.04,-128.50) (   0.96,-132.55)  462.53                80
 11/23/2019   10:02:11   (   0.05,-128.49) (  -0.06,-127.97)   58.20                80
 11/25/2019   22:02:15   (  -0.05,-128.42) (  -0.10,-128.63)   23.94                80
 11/26/2019   21:45:59   (  -0.06,-128.41) (   0.93,-124.06)  496.48                80
 11/28/2019   10:04:51   (   0.04,-128.43) (   0.21,-129.27)   95.51                80
 11/29/2019   09:48:36   (   0.05,-128.41) (  -0.81,-124.70)  424.53                80
 11/30/2019   22:07:34   (  -0.03,-128.35) (  -0.41,-129.92)  179.28                80
 12/01/2019   21:51:19   (  -0.04,-128.34) (   0.62,-125.34)  340.66                80
 12/03/2019   10:10:11   (   0.01,-128.35) (   0.52,-130.55)  251.75                80