Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/27/2020   10:24:04   (   0.03,-128.43) (   0.98,-132.79)  496.17                80
 07/28/2020   10:02:27   (   0.03,-128.42) (  -0.03,-128.20)   25.42                80
 07/30/2020   22:05:09   (   0.02,-128.35) (  -0.12,-128.85)   57.07                80
 07/31/2020   21:48:54   (   0.02,-128.35) (   0.95,-124.28)  464.38                80
 08/02/2020   10:10:24   (  -0.01,-128.39) (   0.21,-129.47)  122.48                80
 08/03/2020   09:48:48   (  -0.01,-128.38) (  -0.80,-124.89)  398.62                80
 08/04/2020   22:10:25   (   0.01,-128.31) (  -0.41,-130.10)  204.73                80
 08/05/2020   21:54:08   (   0.01,-128.30) (   0.61,-125.52)  316.45                80
 08/07/2020   10:15:40   (  -0.01,-128.35) (   0.50,-130.73)  270.56                80
 08/08/2020   09:54:03   (  -0.01,-128.34) (  -0.51,-126.14)  250.36                80
 08/09/2020   22:15:41   (   0.01,-128.26) (  -0.70,-131.36)  353.59                80