Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 5 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/25/2020   10:17:38   (  -0.03,-128.23) (   0.66,-131.42)  362.38                80
 05/26/2020   09:56:01   (  -0.04,-128.21) (  -0.34,-126.83)  157.26                80
 05/27/2020   22:20:20   (   0.02,-128.17) (  -0.88,-132.05)  442.96                80
 05/28/2020   21:58:44   (   0.03,-128.15) (   0.18,-127.48)   76.82                80
 05/31/2020   10:01:18   (  -0.02,-128.12) (  -0.05,-128.09)    4.51                80
 06/02/2020   22:06:40   (   0.01,-128.04) (  -0.17,-128.73)   78.73                80
 06/03/2020   21:45:04   (   0.02,-128.02) (   0.89,-124.15)  440.44                80
 06/05/2020   10:09:14   (  -0.00,-128.00) (   0.31,-129.34)  152.90                80
 06/06/2020   09:47:38   (  -0.02,-127.97) (  -0.75,-124.77)  365.46                80
 06/07/2020   22:11:56   (  -0.00,-127.90) (  -0.47,-129.99)  237.65                80