Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 11 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/08/2021   10:26:53   (   0.11,-128.46) (   0.74,-131.35)  329.41                80
 11/09/2021   10:10:34   (   0.12,-128.46) (  -0.28,-126.76)  194.28                80
 11/10/2021   22:29:29   (  -0.09,-128.45) (  -0.90,-131.96)  400.79                80
 11/11/2021   22:13:11   (  -0.10,-128.45) (   0.12,-127.36)  122.90                80
 11/13/2021   10:31:58   (   0.07,-128.45) (   0.97,-132.54)  466.62                80
 11/14/2021   10:15:40   (   0.08,-128.45) (  -0.05,-127.95)   57.02                80
 11/16/2021   22:15:37   (  -0.07,-128.43) (  -0.12,-128.56)   14.64                80
 11/19/2021   10:18:05   (   0.06,-128.42) (   0.21,-129.14)   81.34                80
 11/20/2021   10:01:47   (   0.08,-128.42) (  -0.80,-124.54)  441.56                80