Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 12 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/06/2019   18:30:53   (  -0.01, -75.22) (  -0.15, -75.78)   63.39                80
 12/07/2019   18:14:37   (  -0.01, -75.24) (   0.87, -71.20)  459.65                80
 12/09/2019   06:36:09   (   0.01, -75.26) (   0.26, -76.41)  130.94                80
 12/10/2019   06:14:34   (   0.02, -75.28) (  -0.76, -71.84)  392.17                80
 12/11/2019   18:36:13   (  -0.02, -75.30) (  -0.39, -77.07)  201.65                80
 12/12/2019   18:19:58   (  -0.02, -75.31) (   0.63, -72.50)  321.65                80
 12/14/2019   06:41:29   (   0.03, -75.34) (   0.56, -77.70)  268.46                80
 12/15/2019   06:19:54   (   0.03, -75.36) (  -0.47, -73.12)  254.78                80
 12/16/2019   18:44:13   (  -0.03, -75.38) (  -0.69, -78.36)  338.69                80
 12/17/2019   18:22:37   (  -0.03, -75.41) (   0.34, -73.78)  184.97                80
 12/19/2019   06:46:49   (   0.03, -75.44) (   0.85, -78.98)  403.95                80