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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/15/2019   09:45:40   (  -0.00,-128.00) (  -0.93,-123.96)  460.49                80
 12/16/2019   22:04:38   (   0.02,-127.92) (  -0.29,-129.19)  144.95                80
 12/17/2019   21:48:23   (   0.01,-127.89) (   0.73,-124.61)  372.87                80
 12/19/2019   10:07:15   (  -0.03,-127.86) (   0.39,-129.82)  223.90                80
 12/20/2019   09:50:58   (  -0.02,-127.82) (  -0.57,-125.23)  293.71                80
 12/21/2019   22:09:58   (   0.04,-127.73) (  -0.59,-130.47)  312.36                80
 12/22/2019   21:53:42   (   0.03,-127.69) (   0.43,-125.90)  205.05                80
 12/24/2019   10:12:33   (  -0.04,-127.66) (   0.75,-131.09)  392.20                80
 12/25/2019   09:56:18   (  -0.03,-127.61) (  -0.28,-126.52)  124.83                80
 12/26/2019   22:15:17   (   0.04,-127.52) (  -0.89,-131.75)  482.18                80
 12/27/2019   21:59:01   (   0.03,-127.47) (   0.08,-127.17)   34.71                80