Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/22/2019   10:05:14   (   0.19,-128.27) (   0.43,-129.34)  121.18                80
 10/23/2019   09:48:59   (   0.20,-128.29) (  -0.58,-124.76)  402.47                80
 10/24/2019   22:08:00   (  -0.18,-128.28) (  -0.54,-130.01)  197.03                80
 10/25/2019   21:51:44   (  -0.19,-128.30) (   0.47,-125.44)  326.76                80
 10/27/2019   10:10:36   (   0.16,-128.38) (   0.69,-130.64)  258.51                80
 10/28/2019   09:54:20   (   0.18,-128.39) (  -0.32,-126.06)  264.91                80
 10/29/2019   22:13:22   (  -0.15,-128.37) (  -0.79,-131.32)  335.50                80
 10/30/2019   21:57:06   (  -0.17,-128.38) (   0.22,-126.74)  187.74                80
 11/01/2019   10:15:57   (   0.14,-128.45) (   0.95,-131.94)  398.32                80
 11/02/2019   09:59:43   (   0.15,-128.47) (  -0.12,-127.38)  124.48                80
 11/03/2019   22:18:43   (  -0.12,-128.43) (  -1.03,-132.62)  477.02                80