Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/09/2020   22:03:01   (  -0.03,-128.27) (  -0.07,-128.39)   14.31                80
 07/12/2020   10:08:15   (   0.03,-128.36) (   0.20,-129.00)   73.95                80
 07/13/2020   09:46:40   (   0.02,-128.37) (  -0.87,-124.43)  449.23                80
 07/14/2020   22:08:18   (  -0.03,-128.33) (  -0.32,-129.66)  150.68                80
 07/15/2020   21:52:02   (  -0.02,-128.34) (   0.69,-125.07)  372.33                80
 07/17/2020   10:13:32   (   0.01,-128.41) (   0.46,-130.27)  212.16                80
 07/18/2020   09:51:56   (   0.01,-128.42) (  -0.61,-125.70)  310.03                80
 07/19/2020   22:13:35   (   0.00,-128.36) (  -0.57,-130.92)  291.81                80
 07/20/2020   21:57:18   (   0.01,-128.36) (   0.44,-126.34)  230.23                80
 07/22/2020   10:18:49   (  -0.01,-128.42) (   0.66,-131.55)  355.24                80