Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 4 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/02/2021   06:40:56   (  -0.04, -75.21) (   0.13, -75.96)   85.79                80
 04/03/2021   06:19:19   (  -0.04, -75.20) (  -0.89, -71.37)  436.55                80
 04/04/2021   18:40:55   (   0.03, -75.20) (  -0.28, -76.58)  157.66                80
 04/05/2021   18:24:38   (   0.03, -75.20) (   0.74, -71.99)  365.41                80
 04/07/2021   06:46:06   (  -0.02, -75.21) (   0.43, -77.17)  224.22                80
 04/08/2021   06:24:29   (  -0.02, -75.21) (  -0.59, -72.58)  299.15                80
 04/09/2021   18:46:05   (   0.01, -75.22) (  -0.58, -77.80)  293.77                80
 04/10/2021   18:29:47   (   0.01, -75.23) (   0.45, -73.21)  230.34                80
 04/12/2021   06:51:17   (  -0.01, -75.26) (   0.67, -78.40)  357.60                80
 04/13/2021   06:29:39   (  -0.02, -75.27) (  -0.35, -73.81)  166.53                80
 04/14/2021   18:51:16   (   0.01, -75.29) (  -0.81, -79.02)  425.75                80