Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 8 14.  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   10:11:21   (  -0.33,-128.44) (   0.24,-130.85)  274.87                80
 08/15/2019   09:55:07   (  -0.32,-128.45) (  -0.81,-126.28)  246.80                80
 08/16/2019   22:14:07   (   0.34,-128.42) (  -0.34,-131.53)  353.70                80
 08/17/2019   21:57:52   (   0.33,-128.42) (   0.66,-126.95)  168.01                80
 08/19/2019   10:16:45   (  -0.35,-128.46) (   0.45,-132.17)  421.78                80
 08/20/2019   10:00:29   (  -0.34,-128.46) (  -0.54,-127.59)   99.49                80
 08/22/2019   22:03:14   (   0.35,-128.42) (   0.38,-128.26)   18.86                80
 08/25/2019   10:03:12   (  -0.36,-128.45) (  -0.27,-128.90)   51.58                80
 08/26/2019   09:46:57   (  -0.36,-128.44) (  -1.26,-124.32)  468.43                80
 08/27/2019   22:05:57   (   0.37,-128.38) (   0.11,-129.57)  135.09                80