Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 11 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/21/2020   10:06:50   (  -0.05,-127.62) (   0.10,-128.18)   63.90                80
 11/22/2020   09:45:15   (  -0.07,-127.66) (  -1.00,-123.61)  462.22                80
 11/23/2020   22:09:32   (   0.04,-127.71) (  -0.18,-128.83)  127.56                80
 11/24/2020   21:47:55   (   0.06,-127.74) (   0.86,-124.25)  398.15                80
 11/26/2020   10:12:05   (  -0.03,-127.81) (   0.31,-129.44)  185.18                80
 11/27/2020   09:50:28   (  -0.05,-127.84) (  -0.73,-124.86)  340.66                80
 11/28/2020   22:14:45   (   0.01,-127.88) (  -0.50,-130.06)  249.13                80
 11/29/2020   21:53:08   (   0.03,-127.91) (   0.55,-125.48)  275.95                80
 12/01/2020   10:17:17   (   0.01,-127.96) (   0.63,-130.67)  309.08                80
 12/02/2020   09:55:41   (  -0.01,-127.99) (  -0.41,-126.09)  215.86                80
 12/03/2020   22:19:58   (  -0.02,-128.02) (  -0.75,-131.31)  374.70                80