Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 1 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/05/2020   09:48:04   (  -0.04,-128.37) (  -0.90,-124.54)  436.35                80
 01/06/2020   22:07:03   (   0.05,-128.36) (  -0.28,-129.77)  161.36                80
 01/07/2020   21:50:48   (   0.04,-128.37) (   0.75,-125.20)  361.35                80
 01/09/2020   10:09:39   (  -0.04,-128.41) (   0.40,-130.40)  227.30                80
 01/10/2020   09:53:24   (  -0.04,-128.41) (  -0.63,-125.83)  295.03                80
 01/11/2020   22:12:23   (   0.04,-128.39) (  -0.55,-131.06)  303.92                80
 01/12/2020   21:56:08   (   0.04,-128.39) (   0.48,-126.48)  217.87                80
 01/14/2020   10:14:59   (  -0.05,-128.42) (   0.66,-131.69)  372.13                80
 01/15/2020   09:58:43   (  -0.04,-128.42) (  -0.37,-127.11)  149.64                80
 01/16/2020   22:20:23   (   0.05,-128.40) (  -0.82,-132.34)  449.72                80
 01/17/2020   22:01:27   (   0.04,-128.39) (   0.21,-127.77)   71.73                80