Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/02/2019   09:46:24   (   0.30,-127.54) (  -0.45,-124.09)  392.18                80
 10/03/2019   22:05:26   (  -0.28,-127.44) (  -0.69,-129.34)  216.49                80
 10/04/2019   21:49:10   (  -0.29,-127.39) (   0.31,-124.76)  300.28                80
 10/06/2019   10:08:01   (   0.26,-127.36) (   0.84,-129.97)  296.67                80
 10/07/2019   09:51:46   (   0.27,-127.32) (  -0.17,-125.39)  219.56                80
 10/08/2019   22:10:46   (  -0.25,-127.20) (  -1.03,-130.63)  390.46                80
 10/09/2019   21:54:31   (  -0.25,-127.16) (  -0.02,-126.05)  126.02                80
 10/11/2019   10:13:22   (   0.23,-127.13) (   1.18,-131.26)  470.66                80
 10/12/2019   09:57:07   (   0.24,-127.08) (   0.17,-126.68)   45.44                80
 10/14/2019   21:57:11   (  -0.23,-126.91) (  -0.35,-127.34)   49.53                80
 10/15/2019   21:40:56   (  -0.24,-126.86) (   0.66,-122.77)  466.49                80