Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/13/2020   10:13:15   (  -0.20,-127.84) (   0.36,-130.47)  300.14                80
 04/14/2020   09:51:39   (  -0.21,-127.86) (  -0.69,-125.90)  224.54                80
 04/15/2020   22:15:56   (   0.19,-127.91) (  -0.55,-131.11)  365.98                80
 04/16/2020   21:54:21   (   0.20,-127.94) (   0.50,-126.54)  159.02                80
 04/18/2020   10:18:32   (  -0.17,-127.99) (   0.65,-131.74)  426.99                80
 04/19/2020   09:56:57   (  -0.18,-128.02) (  -0.40,-127.17)   97.47                80
 04/20/2020   22:21:14   (   0.16,-128.05) (  -0.84,-132.38)  493.98                80
 04/21/2020   21:59:39   (   0.17,-128.08) (   0.21,-127.81)   30.70                80
 04/24/2020   10:04:54   (  -0.16,-128.16) (  -0.12,-128.44)   31.70                80
 04/25/2020   09:43:19   (  -0.18,-128.18) (  -1.17,-123.87)  492.02                80