Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 7 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/03/2019   10:06:05   (  -0.12,-127.80) (   0.28,-129.48)  192.30                80
 07/04/2019   09:49:50   (  -0.11,-127.76) (  -0.76,-124.91)  324.77                80
 07/05/2019   22:08:50   (   0.14,-127.70) (  -0.43,-130.15)  279.92                80
 07/06/2019   21:52:36   (   0.13,-127.66) (   0.62,-125.58)  237.34                80
 07/08/2019   10:11:28   (  -0.15,-127.60) (   0.53,-130.79)  362.88                80
 07/09/2019   09:55:13   (  -0.14,-127.56) (  -0.45,-126.21)  153.90                80
 07/10/2019   22:14:13   (   0.16,-127.49) (  -0.73,-131.45)  451.85                80
 07/11/2019   21:57:58   (   0.15,-127.45) (   0.26,-126.88)   65.00                80
 07/14/2019   09:57:55   (  -0.17,-127.35) (  -0.14,-127.52)   19.30                80
 07/15/2019   09:41:40   (  -0.16,-127.30) (  -1.13,-122.94)  496.76                80
 07/16/2019   22:00:40   (   0.19,-127.22) (  -0.04,-128.18)  110.11                80