Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/27/2019   10:10:36   (   0.16,-128.38) (   0.67,-130.64)  257.44                80
 10/28/2019   09:54:20   (   0.18,-128.40) (  -0.34,-126.06)  266.16                80
 10/29/2019   22:13:21   (  -0.15,-128.38) (  -0.83,-131.31)  333.74                80
 10/30/2019   21:57:05   (  -0.17,-128.40) (   0.19,-126.73)  189.68                80
 11/01/2019   10:15:58   (   0.14,-128.47) (   0.92,-131.95)  396.29                80
 11/02/2019   09:59:42   (   0.15,-128.48) (  -0.10,-127.37)  126.68                80
 11/03/2019   22:18:42   (  -0.12,-128.45) (  -1.06,-132.61)  474.23                80
 11/04/2019   22:02:27   (  -0.13,-128.46) (  -0.04,-128.04)   48.69                80
 11/07/2019   10:02:24   (   0.12,-128.54) (   0.14,-128.68)   14.94                80