Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 8 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/25/2019   10:05:39   (   0.38,-128.42) (   0.48,-128.73)   35.83                80
 08/26/2019   09:44:04   (   0.37,-128.41) (  -0.58,-124.17)  484.08                80
 08/27/2019   22:05:45   (  -0.38,-128.39) (  -0.59,-129.41)  115.35                80
 08/28/2019   21:49:29   (  -0.37,-128.38) (   0.41,-124.83)  404.68                80
 08/30/2019   10:11:02   (   0.38,-128.38) (   0.74,-130.04)  189.41                80
 08/31/2019   09:49:26   (   0.37,-128.36) (  -0.25,-125.46)  330.06                80
 09/01/2019   22:11:06   (  -0.37,-128.33) (  -0.91,-130.70)  270.75                80
 09/02/2019   21:54:52   (  -0.37,-128.32) (   0.14,-126.14)  249.08                80
 09/04/2019   10:16:23   (   0.37,-128.32) (   1.06,-131.34)  344.87                80
 09/05/2019   09:54:49   (   0.37,-128.30) (   0.01,-126.77)  174.21                80
 09/06/2019   22:16:29   (  -0.37,-128.25) (  -1.18,-132.01)  428.43                80
 09/07/2019   22:00:14   (  -0.36,-128.23) (  -0.18,-127.44)   90.75                80