Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/01/2020   22:14:06   (   0.13,-128.41) (  -0.26,-130.18)  202.04                80
 10/02/2020   21:52:29   (   0.13,-128.41) (   0.77,-125.60)  320.56                80
 10/04/2020   10:13:58   (  -0.13,-128.45) (   0.38,-130.79)  266.61                80
 10/05/2020   09:57:42   (  -0.13,-128.45) (  -0.65,-126.21)  255.83                80
 10/06/2020   22:19:20   (   0.13,-128.42) (  -0.54,-131.43)  343.10                80
 10/07/2020   21:57:44   (   0.13,-128.42) (   0.49,-126.85)  178.58                80
 10/09/2020   10:19:13   (  -0.13,-128.44) (   0.65,-132.04)  410.30                80
 10/10/2020   10:02:57   (  -0.14,-128.43) (  -0.38,-127.46)  111.19                80
 10/11/2020   22:24:35   (   0.14,-128.40) (  -0.80,-132.69)  488.65                80
 10/12/2020   22:02:59   (   0.14,-128.38) (   0.23,-128.11)   32.35                80