Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/16/2021   18:41:01   (   0.05, -75.20) (   0.05, -75.21)    0.96                80
 10/19/2021   06:46:09   (  -0.05, -75.22) (   0.08, -75.78)   64.07                80
 10/20/2021   06:24:30   (  -0.05, -75.23) (  -0.94, -71.19)  460.41                80
 10/21/2021   18:48:46   (   0.04, -75.25) (  -0.25, -76.39)  130.96                80
 10/22/2021   18:27:08   (   0.04, -75.26) (   0.84, -71.81)  393.96                80
 10/24/2021   06:51:13   (  -0.03, -75.28) (   0.37, -76.97)  192.26                80
 10/25/2021   06:29:36   (  -0.04, -75.30) (  -0.71, -72.39)  332.62                80
 10/26/2021   18:53:51   (   0.02, -75.32) (  -0.47, -77.59)  258.36                80
 10/27/2021   18:32:13   (   0.03, -75.34) (   0.56, -72.99)  266.83                80
 10/29/2021   06:56:19   (  -0.02, -75.37) (   0.59, -78.17)  318.52                80