Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/05/2021   18:31:16   (  -0.01, -75.19) (   0.24, -74.11)  123.16                80
 01/07/2021   06:52:45   (   0.01, -75.18) (   0.91, -79.30)  468.35                80
 01/08/2021   06:31:08   (   0.00, -75.18) (  -0.09, -74.71)   54.13                80
 01/10/2021   18:33:48   (   0.00, -75.19) (  -0.06, -75.34)   17.55                80
 01/13/2021   06:39:00   (  -0.00, -75.20) (   0.14, -75.95)   84.84                80
 01/14/2021   06:17:23   (  -0.00, -75.20) (  -0.86, -71.36)  438.45                80
 01/15/2021   18:39:00   (  -0.00, -75.22) (  -0.29, -76.58)  154.37                80
 01/16/2021   18:22:43   (  -0.00, -75.23) (   0.71, -71.99)  369.72                80
 01/18/2021   06:44:12   (   0.00, -75.26) (   0.42, -77.18)  218.59                80