Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/04/2020   22:00:25   (  -0.02,-128.18) (   0.20,-127.12)  119.85                80
 07/06/2020   10:21:55   (   0.03,-128.27) (   0.93,-132.32)  462.17                80
 07/07/2020   10:00:19   (   0.02,-128.28) (  -0.08,-127.74)   61.57                80
 07/09/2020   22:03:02   (  -0.02,-128.27) (  -0.04,-128.39)   13.70                80
 07/12/2020   10:08:15   (   0.03,-128.38) (   0.16,-129.01)   71.83                80
 07/13/2020   09:46:39   (   0.02,-128.39) (  -0.85,-124.43)  451.61                80
 07/14/2020   22:08:17   (  -0.02,-128.35) (  -0.32,-129.65)  148.49                80
 07/15/2020   21:52:01   (  -0.02,-128.36) (   0.69,-125.07)  374.83                80
 07/17/2020   10:13:31   (   0.01,-128.44) (   0.45,-130.27)  208.50                80