Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 11 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/30/2019   22:07:35   (  -0.02,-128.34) (  -0.38,-129.92)  179.64                80
 12/01/2019   21:51:19   (  -0.03,-128.33) (   0.64,-125.35)  339.99                80
 12/03/2019   10:10:12   (   0.01,-128.33) (   0.49,-130.56)  252.97                80
 12/04/2019   09:53:56   (   0.02,-128.31) (  -0.53,-125.98)  266.55                80
 12/05/2019   22:12:54   (   0.00,-128.25) (  -0.69,-131.20)  337.89                80
 12/06/2019   21:56:39   (  -0.01,-128.22) (   0.33,-126.63)  181.46                80
 12/08/2019   10:15:31   (  -0.01,-128.22) (   0.80,-131.84)  412.03                80
 12/09/2019   09:59:16   (   0.00,-128.20) (  -0.22,-127.26)  106.97                80
 12/10/2019   22:18:14   (   0.02,-128.12) (  -0.99,-132.49)  498.35                80
 12/11/2019   22:01:59   (   0.00,-128.09) (   0.03,-127.91)   20.18                80