Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 7 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/30/2019   09:57:52   (  -0.25,-128.23) (  -0.54,-126.92)  149.60                80
 07/31/2019   22:16:53   (   0.27,-128.24) (  -0.61,-132.16)  447.53                80
 08/01/2019   22:00:38   (   0.26,-128.25) (   0.44,-127.60)   75.78                80
 08/04/2019   10:03:16   (  -0.27,-128.32) (  -0.31,-128.24)   10.05                80
 08/06/2019   22:03:21   (   0.28,-128.33) (   0.15,-128.90)   64.91                80
 08/07/2019   21:47:05   (   0.28,-128.35) (   1.15,-124.32)  457.88                80
 08/09/2019   10:05:59   (  -0.30,-128.39) (  -0.02,-129.54)  131.67                80
 08/10/2019   09:49:44   (  -0.29,-128.40) (  -1.08,-124.98)  390.63                80
 08/11/2019   22:08:45   (   0.31,-128.39) (  -0.07,-130.22)  208.32                80