Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 11 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)
 11/05/2021   22:24:25   (  -0.12,-128.45) (  -0.63,-130.77)  264.56                80
 11/06/2021   22:08:06   (  -0.14,-128.45) (   0.40,-126.18)  259.66                80
 11/08/2021   10:26:53   (   0.11,-128.46) (   0.73,-131.35)  329.61                80
 11/09/2021   10:10:33   (   0.12,-128.45) (  -0.24,-126.75)  194.10                80
 11/10/2021   22:29:29   (  -0.09,-128.45) (  -0.87,-131.96)  400.92                80
 11/11/2021   22:13:11   (  -0.10,-128.44) (   0.17,-127.37)  122.81                80
 11/13/2021   10:31:56   (   0.07,-128.44) (   1.02,-132.53)  466.67                80
 11/14/2021   10:15:38   (   0.08,-128.44) (  -0.02,-127.94)   57.04                80
 11/16/2021   22:15:35   (  -0.07,-128.43) (  -0.10,-128.55)   14.20                80