Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 7 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/23/2019   10:28:09   (  -0.02,-137.21) (  -0.51,-135.14)  236.06                80
 07/24/2019   22:49:48   (   0.03,-137.20) (  -0.71,-140.37)  362.33                80
 07/25/2019   22:33:34   (   0.03,-137.19) (   0.34,-135.80)  158.47                80
 07/27/2019   10:55:06   (  -0.03,-137.20) (   0.83,-141.01)  435.23                80
 07/28/2019   10:33:32   (  -0.03,-137.19) (  -0.22,-136.45)   84.85                80
 07/30/2019   22:38:56   (   0.04,-137.15) (   0.06,-137.11)    4.18                80
 08/02/2019   10:38:54   (  -0.05,-137.12) (   0.07,-137.75)   71.97                80
 08/03/2019   10:22:39   (  -0.04,-137.10) (  -0.92,-133.17)  447.20                80
 08/04/2019   22:41:39   (   0.05,-137.06) (  -0.23,-138.42)  154.35                80
 08/05/2019   22:25:24   (   0.05,-137.04) (   0.76,-133.84)  364.73                80