Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 5 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/21/2020   09:50:45   (  -0.06,-128.27) (  -0.64,-125.57)  307.42                80
 05/22/2020   22:15:04   (   0.04,-128.25) (  -0.51,-130.81)  290.93                80
 05/23/2020   21:53:28   (   0.05,-128.24) (   0.49,-126.22)  229.48                80
 05/25/2020   10:17:37   (  -0.03,-128.23) (   0.71,-131.41)  362.80                80
 05/26/2020   09:56:01   (  -0.04,-128.21) (  -0.35,-126.83)  156.73                80
 05/27/2020   22:20:20   (   0.02,-128.16) (  -0.86,-132.05)  443.59                80
 05/28/2020   21:58:44   (   0.03,-128.15) (   0.20,-127.48)   76.12                80
 05/31/2020   10:03:57   (  -0.02,-128.11) (  -0.01,-128.08)    2.84                80
 06/02/2020   22:06:40   (   0.01,-128.03) (  -0.14,-128.73)   79.90                80
 06/03/2020   21:45:03   (   0.02,-128.01) (   0.86,-124.15)  439.14                80