Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/19/2020   09:44:08   (  -0.31,-128.21) (  -1.24,-124.16)  462.25                80
 03/20/2020   22:05:47   (   0.30,-128.22) (   0.03,-129.38)  133.33                80
 03/21/2020   21:49:31   (   0.30,-128.19) (   1.07,-124.81)  385.98                80
 03/23/2020   10:11:01   (  -0.29,-128.13) (   0.12,-130.00)  213.49                80
 03/24/2020   09:49:26   (  -0.30,-128.10) (  -0.92,-125.43)  305.26                80
 03/25/2020   22:13:44   (   0.28,-128.09) (  -0.28,-130.65)  291.24                80
 03/26/2020   21:54:48   (   0.29,-128.07) (   0.71,-126.06)  227.62                80
 03/28/2020   10:16:19   (  -0.27,-128.00) (   0.43,-131.27)  372.22                80
 03/29/2020   09:54:43   (  -0.28,-127.96) (  -0.55,-126.68)  145.76                80
 03/30/2020   22:19:01   (   0.26,-127.94) (  -0.63,-131.91)  452.41                80
 03/31/2020   21:57:25   (   0.27,-127.91) (   0.41,-127.33)   65.54                80