Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/28/2019   09:54:20   (   0.18,-128.40) (  -0.32,-126.06)  266.20                80
 10/29/2019   22:13:21   (  -0.15,-128.38) (  -0.79,-131.31)  333.94                80
 10/30/2019   21:57:06   (  -0.16,-128.39) (   0.22,-126.74)  189.41                80
 11/01/2019   10:15:57   (   0.14,-128.47) (   0.94,-131.94)  396.52                80
 11/02/2019   09:59:43   (   0.15,-128.48) (  -0.13,-127.38)  126.44                80
 11/03/2019   22:18:43   (  -0.12,-128.45) (  -1.03,-132.62)  474.71                80
 11/04/2019   22:02:28   (  -0.13,-128.46) (  -0.01,-128.04)   48.23                80
 11/07/2019   10:02:23   (   0.12,-128.54) (   0.18,-128.67)   15.73                80
 11/09/2019   22:05:08   (  -0.11,-128.51) (  -0.30,-129.34)   94.43                80
 11/10/2019   21:48:53   (  -0.12,-128.52) (   0.71,-124.76)  428.04                80