Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 5 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/23/2020   21:53:28   (   0.05,-128.24) (   0.49,-126.22)  229.65                80
 05/25/2020   10:17:37   (  -0.03,-128.23) (   0.71,-131.40)  362.51                80
 05/26/2020   09:56:01   (  -0.04,-128.21) (  -0.36,-126.83)  157.07                80
 05/27/2020   22:20:20   (   0.02,-128.17) (  -0.86,-132.05)  443.20                80
 05/28/2020   21:58:44   (   0.03,-128.15) (   0.20,-127.48)   76.57                80
 05/31/2020   10:01:17   (  -0.02,-128.11) (  -0.02,-128.08)    3.29                80
 06/02/2020   22:06:40   (   0.01,-128.04) (  -0.13,-128.73)   79.19                80
 06/03/2020   21:45:03   (   0.02,-128.01) (   0.87,-124.15)  439.91                80
 06/05/2020   10:09:13   (  -0.00,-127.99) (   0.31,-129.34)  153.52                80