Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/13/2021   06:51:12   (  -0.01, -75.12) (   0.79, -78.71)  409.43                80
 02/14/2021   06:29:34   (  -0.01, -75.13) (  -0.21, -74.12)  113.68                80
 02/15/2021   18:51:12   (   0.01, -75.14) (  -0.91, -79.35)  479.42                80
 02/16/2021   18:34:55   (   0.01, -75.15) (   0.09, -74.76)   44.28                80
 02/19/2021   06:37:26   (  -0.02, -75.17) (   0.04, -75.36)   21.38                80
 02/21/2021   18:37:27   (   0.02, -75.20) (  -0.15, -75.99)   90.11                80
 02/22/2021   18:21:09   (   0.03, -75.22) (   0.86, -71.40)  433.96                80
 02/24/2021   06:42:37   (  -0.03, -75.23) (   0.28, -76.59)  154.71                80
 02/25/2021   06:21:01   (  -0.03, -75.25) (  -0.78, -72.01)  369.41                80
 02/26/2021   18:42:38   (   0.04, -75.27) (  -0.39, -77.23)  222.58                80