Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 12 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/06/2019   21:56:39   (  -0.01,-128.22) (   0.34,-126.63)  181.07                80
 12/08/2019   10:15:31   (  -0.01,-128.22) (   0.79,-131.84)  412.76                80
 12/09/2019   09:59:16   (   0.00,-128.19) (  -0.23,-127.26)  106.11                80
 12/10/2019   22:18:14   (   0.02,-128.11) (  -0.99,-132.49)  499.37                80
 12/11/2019   22:01:59   (   0.00,-128.08) (   0.04,-127.91)   19.02                80
 12/14/2019   10:01:55   (  -0.01,-128.03) (   0.13,-128.53)   58.32                80
 12/15/2019   09:45:39   (   0.00,-127.99) (  -0.90,-123.96)  459.37                80
 12/16/2019   22:04:38   (   0.02,-127.90) (  -0.26,-129.20)  147.69                80
 12/17/2019   21:48:22   (   0.01,-127.86) (   0.71,-124.61)  369.74                80
 12/19/2019   10:07:14   (  -0.03,-127.83) (   0.42,-129.82)  226.48                80