Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/06/2020   10:21:55   (   0.03,-128.26) (   0.95,-132.32)  462.50                80
 07/07/2020   10:00:19   (   0.02,-128.28) (  -0.12,-127.75)   61.10                80
 07/09/2020   22:05:41   (  -0.03,-128.27) (  -0.07,-128.39)   14.34                80
 07/12/2020   10:08:16   (   0.03,-128.37) (   0.14,-129.01)   73.07                80
 07/13/2020   09:46:40   (   0.02,-128.38) (  -0.86,-124.43)  450.27                80
 07/14/2020   22:08:18   (  -0.02,-128.34) (  -0.32,-129.65)  149.84                80
 07/15/2020   21:52:01   (  -0.02,-128.35) (   0.69,-125.07)  373.32                80
 07/17/2020   10:13:33   (   0.01,-128.43) (   0.40,-130.28)  210.48                80
 07/18/2020   09:51:56   (   0.00,-128.43) (  -0.60,-125.70)  311.87                80
 07/19/2020   22:13:35   (   0.00,-128.38) (  -0.57,-130.92)  290.15                80