Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2019   21:48:23   (   0.01,-127.89) (   0.77,-124.62)  373.37                80
 12/19/2019   10:07:14   (  -0.03,-127.86) (   0.41,-129.82)  223.60                80
 12/20/2019   09:50:59   (  -0.02,-127.82) (  -0.61,-125.24)  294.09                80
 12/21/2019   22:09:58   (   0.04,-127.74) (  -0.55,-130.48)  311.43                80
 12/22/2019   21:53:42   (   0.03,-127.70) (   0.42,-125.89)  206.09                80
 12/24/2019   10:12:34   (  -0.04,-127.66) (   0.70,-131.10)  391.40                80
 12/25/2019   09:56:18   (  -0.03,-127.62) (  -0.26,-126.51)  125.75                80
 12/26/2019   22:15:17   (   0.04,-127.53) (  -0.90,-131.75)  480.71                80
 12/27/2019   21:59:01   (   0.03,-127.49) (   0.13,-127.17)   36.33                80
 12/30/2019   09:58:56   (  -0.03,-127.40) (   0.08,-127.79)   45.09                80