Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 5 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/15/2020   10:07:04   (  -0.07,-128.30) (   0.10,-128.89)   67.51                80
 05/16/2020   09:45:29   (  -0.08,-128.30) (  -0.96,-124.32)  453.59                80
 05/17/2020   22:09:47   (   0.05,-128.29) (  -0.25,-129.54)  142.93                80
 05/18/2020   21:48:12   (   0.07,-128.29) (   0.81,-124.97)  378.39                80
 05/20/2020   10:12:21   (  -0.04,-128.29) (   0.40,-130.15)  212.89                80
 05/21/2020   09:50:45   (  -0.06,-128.28) (  -0.66,-125.58)  307.57                80
 05/22/2020   22:15:04   (   0.04,-128.25) (  -0.55,-130.80)  290.81                80
 05/23/2020   21:53:28   (   0.05,-128.24) (   0.51,-126.23)  229.67                80
 05/25/2020   10:17:38   (  -0.03,-128.23) (   0.70,-131.41)  362.34                80
 05/26/2020   09:56:02   (  -0.04,-128.22) (  -0.36,-126.84)  157.21                80
 05/27/2020   22:20:20   (   0.02,-128.17) (  -0.85,-132.06)  443.22                80