Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 11 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/13/2019   09:51:29   (   0.11,-128.54) (  -0.61,-125.39)  359.38                80
 11/14/2019   22:10:29   (  -0.08,-128.49) (  -0.58,-130.62)  243.07                80
 11/15/2019   21:54:13   (  -0.10,-128.49) (   0.43,-126.05)  278.22                80
 11/17/2019   10:13:06   (   0.07,-128.53) (   0.69,-131.26)  311.72                80
 11/18/2019   09:56:50   (   0.08,-128.52) (  -0.33,-126.68)  208.95                80
 11/19/2019   22:15:49   (  -0.05,-128.46) (  -0.86,-131.92)  394.92                80
 11/20/2019   21:59:34   (  -0.06,-128.45) (   0.16,-127.34)  125.70                80
 11/22/2019   10:18:26   (   0.04,-128.48) (   0.97,-132.55)  464.77                80
 11/23/2019   10:02:11   (   0.05,-128.47) (  -0.05,-127.98)   55.59                80
 11/25/2019   22:02:15   (  -0.05,-128.39) (  -0.10,-128.64)   28.58                80
 11/26/2019   21:45:59   (  -0.06,-128.37) (   0.92,-124.06)  491.46                80