Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/08/2021   06:31:08   (   0.01, -75.18) (  -0.09, -74.71)   54.00                80
 01/10/2021   18:33:48   (  -0.00, -75.19) (  -0.06, -75.33)   17.43                80
 01/13/2021   06:39:00   (   0.00, -75.19) (   0.20, -75.93)   85.27                80
 01/14/2021   06:17:23   (   0.00, -75.20) (  -0.86, -71.36)  437.97                80
 01/15/2021   18:39:00   (  -0.01, -75.22) (  -0.30, -76.58)  154.65                80
 01/16/2021   18:22:43   (  -0.01, -75.23) (   0.70, -71.98)  369.35                80
 01/18/2021   06:44:12   (   0.01, -75.25) (   0.42, -77.18)  219.37                80
 01/19/2021   06:22:35   (   0.01, -75.26) (  -0.58, -72.59)  304.88                80
 01/20/2021   18:44:12   (  -0.01, -75.29) (  -0.58, -77.80)  286.69                80
 01/21/2021   18:27:56   (  -0.01, -75.31) (   0.48, -73.23)  238.06                80