Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 1 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/09/2020   10:09:39   (  -0.05,-128.41) (   0.42,-130.40)  227.03                80
 01/10/2020   09:53:23   (  -0.04,-128.41) (  -0.61,-125.82)  295.41                80
 01/11/2020   22:12:23   (   0.04,-128.40) (  -0.57,-131.05)  303.16                80
 01/12/2020   21:56:07   (   0.04,-128.40) (   0.46,-126.48)  218.77                80
 01/14/2020   10:14:59   (  -0.05,-128.43) (   0.68,-131.68)  371.21                80
 01/15/2020   09:58:43   (  -0.04,-128.43) (  -0.35,-127.11)  150.62                80
 01/16/2020   22:17:42   (   0.05,-128.41) (  -0.84,-132.34)  448.39                80
 01/17/2020   22:01:27   (   0.05,-128.41) (   0.19,-127.76)   73.15                80
 01/20/2020   10:04:02   (  -0.04,-128.42) (  -0.03,-128.38)    4.21                80