Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 12 14.  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) (   0.13,-128.53)   57.48                80
 12/15/2019   09:45:39   (  -0.00,-128.00) (  -0.89,-123.96)  460.50                80
 12/16/2019   22:04:38   (   0.02,-127.92) (  -0.27,-129.19)  145.16                80
 12/17/2019   21:48:23   (   0.01,-127.88) (   0.75,-124.62)  372.56                80
 12/19/2019   10:07:14   (  -0.03,-127.85) (   0.43,-129.81)  224.13                80
 12/20/2019   09:50:59   (  -0.02,-127.82) (  -0.59,-125.24)  293.41                80
 12/21/2019   22:09:58   (   0.04,-127.73) (  -0.58,-130.47)  312.89                80
 12/22/2019   21:53:43   (   0.03,-127.69) (   0.45,-125.90)  204.47                80
 12/24/2019   10:12:34   (  -0.04,-127.65) (   0.74,-131.10)  392.73                80
 12/25/2019   09:56:18   (  -0.03,-127.61) (  -0.29,-126.52)  124.25                80
 12/26/2019   22:15:17   (   0.04,-127.51) (  -0.94,-131.75)  483.02                80
 12/27/2019   21:59:01   (   0.03,-127.47) (   0.09,-127.17)   33.75                80