Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 9 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/29/2020   10:08:44   (  -0.13,-128.42) (   0.11,-129.54)  126.86                80
 09/30/2020   09:52:27   (  -0.13,-128.43) (  -0.91,-124.96)  396.19                80
 10/01/2020   22:14:06   (   0.13,-128.41) (  -0.27,-130.18)  202.20                80
 10/02/2020   21:52:29   (   0.13,-128.41) (   0.75,-125.60)  320.44                80
 10/04/2020   10:13:58   (  -0.13,-128.45) (   0.40,-130.79)  266.33                80
 10/05/2020   09:57:42   (  -0.13,-128.46) (  -0.63,-126.21)  256.17                80
 10/06/2020   22:19:20   (   0.13,-128.42) (  -0.55,-131.43)  342.98                80
 10/07/2020   21:57:44   (   0.13,-128.42) (   0.47,-126.85)  178.76                80
 10/09/2020   10:19:13   (  -0.13,-128.45) (   0.68,-132.04)  409.76                80
 10/10/2020   10:02:57   (  -0.14,-128.44) (  -0.35,-127.46)  111.75                80
 10/11/2020   22:24:35   (   0.14,-128.40) (  -0.83,-132.68)  488.25                80
 10/12/2020   22:02:58   (   0.14,-128.39) (   0.20,-128.10)   32.69                80