Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 7 5.  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,-128.27) (   0.94,-132.32)  462.35                80
 07/07/2020   10:00:20   (   0.02,-128.28) (  -0.13,-127.75)   61.37                80
 07/09/2020   22:03:01   (  -0.02,-128.27) (  -0.06,-128.39)   13.91                80
 07/12/2020   10:08:15   (   0.03,-128.37) (   0.18,-129.01)   72.43                80
 07/13/2020   09:46:40   (   0.02,-128.39) (  -0.89,-124.44)  450.95                80
 07/14/2020   22:08:18   (  -0.02,-128.35) (  -0.29,-129.66)  149.19                80
 07/15/2020   21:52:02   (  -0.02,-128.36) (   0.72,-125.08)  374.06                80
 07/17/2020   10:13:32   (   0.01,-128.44) (   0.43,-130.27)  209.46                80
 07/18/2020   09:51:55   (   0.00,-128.44) (  -0.58,-125.69)  312.98                80