Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 12 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/08/2019   10:15:32   (  -0.01,-128.22) (   0.78,-131.84)  412.74                80
 12/09/2019   09:59:15   (  -0.00,-128.19) (  -0.18,-127.25)  106.15                80
 12/10/2019   22:18:14   (   0.02,-128.11) (  -0.98,-132.49)  499.12                80
 12/11/2019   22:01:59   (   0.00,-128.08) (   0.04,-127.91)   19.28                80
 12/14/2019   10:01:55   (  -0.01,-128.03) (   0.12,-128.54)   58.15                80
 12/15/2019   09:45:39   (   0.00,-127.99) (  -0.90,-123.96)  459.53                80
 12/16/2019   22:04:39   (   0.02,-127.90) (  -0.26,-129.20)  147.35                80
 12/17/2019   21:48:23   (   0.01,-127.86) (   0.76,-124.62)  370.11                80
 12/19/2019   10:07:14   (  -0.03,-127.84) (   0.42,-129.82)  226.22                80
 12/20/2019   09:50:59   (  -0.02,-127.80) (  -0.60,-125.24)  291.06                80
 12/21/2019   22:09:57   (   0.03,-127.70) (  -0.62,-130.47)  316.35                80