Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 5 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/24/2019   22:03:36   (  -0.03,-128.45) (  -0.11,-128.83)   44.04                80
 05/25/2019   21:47:20   (  -0.04,-128.45) (   0.87,-124.25)  477.50                80
 05/27/2019   10:06:13   (   0.03,-128.44) (   0.26,-129.47)  116.95                80
 05/28/2019   09:49:58   (   0.03,-128.44) (  -0.78,-124.90)  404.10                80
 05/29/2019   22:08:59   (  -0.02,-128.45) (  -0.39,-130.15)  193.68                80
 05/30/2019   21:52:44   (  -0.02,-128.45) (   0.59,-125.57)  327.35                80
 06/01/2019   10:11:36   (   0.01,-128.44) (   0.54,-130.78)  267.59                80
 06/02/2019   09:55:22   (   0.01,-128.43) (  -0.50,-126.22)  252.66                80
 06/03/2019   22:14:23   (   0.01,-128.41) (  -0.67,-131.46)  347.16                80
 06/04/2019   21:58:08   (   0.00,-128.40) (   0.31,-126.88)  172.91                80
 06/06/2019   10:17:00   (  -0.02,-128.39) (   0.82,-132.10)  423.00                80