Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 12 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/08/2019   10:15:31   (  -0.01,-128.22) (   0.82,-131.83)  412.75                80
 12/09/2019   09:59:16   (   0.00,-128.19) (  -0.21,-127.26)  106.09                80
 12/10/2019   22:18:15   (   0.02,-128.11) (  -0.96,-132.49)  499.27                80
 12/11/2019   22:01:59   (   0.00,-128.08) (   0.07,-127.92)   19.32                80
 12/14/2019   10:01:55   (  -0.01,-128.03) (   0.10,-128.54)   58.24                80
 12/15/2019   09:45:40   (   0.00,-127.99) (  -0.92,-123.97)  459.41                80
 12/16/2019   22:04:38   (   0.02,-127.90) (  -0.29,-129.19)  147.61                80
 12/17/2019   21:48:23   (   0.01,-127.86) (   0.73,-124.61)  369.83                80
 12/19/2019   10:07:15   (  -0.03,-127.83) (   0.40,-129.83)  226.45                80
 12/20/2019   09:50:58   (  -0.02,-127.79) (  -0.57,-125.24)  290.84                80