Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 12 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2019   10:01:55   (  -0.01,-128.03) (   0.08,-128.54)   57.50                80
 12/15/2019   09:45:39   (  -0.00,-128.00) (  -0.88,-123.95)  460.34                80
 12/16/2019   22:04:38   (   0.02,-127.91) (  -0.28,-129.19)  145.84                80
 12/17/2019   21:48:23   (   0.01,-127.88) (   0.75,-124.62)  371.78                80
 12/19/2019   10:07:14   (  -0.03,-127.85) (   0.44,-129.81)  224.72                80
 12/20/2019   09:50:59   (  -0.02,-127.81) (  -0.59,-125.24)  292.73                80
 12/21/2019   22:09:58   (   0.04,-127.72) (  -0.57,-130.48)  314.05                80
 12/22/2019   21:53:41   (   0.03,-127.68) (   0.40,-125.89)  203.23                80
 12/24/2019   10:12:34   (  -0.04,-127.64) (   0.72,-131.10)  393.80                80
 12/25/2019   09:56:17   (  -0.03,-127.60) (  -0.24,-126.51)  123.12                80