Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 8 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/14/2019   10:11:22   (  -0.33,-128.44) (   0.19,-130.86)  274.89                80
 08/15/2019   09:55:06   (  -0.32,-128.45) (  -0.80,-126.28)  246.79                80
 08/16/2019   22:14:07   (   0.34,-128.42) (  -0.35,-131.53)  353.73                80
 08/17/2019   21:57:51   (   0.33,-128.43) (   0.65,-126.95)  168.02                80
 08/19/2019   10:16:45   (  -0.35,-128.47) (   0.46,-132.17)  421.66                80
 08/20/2019   10:00:29   (  -0.34,-128.47) (  -0.53,-127.59)   99.64                80
 08/22/2019   22:03:14   (   0.35,-128.43) (   0.38,-128.26)   19.05                80
 08/25/2019   10:03:12   (  -0.36,-128.45) (  -0.27,-128.90)   51.26                80
 08/26/2019   09:46:56   (  -0.36,-128.44) (  -1.27,-124.32)  468.80                80