Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/30/2021   18:35:46   (   0.04, -75.23) (   0.01, -75.37)   16.26                80
 04/02/2021   06:40:56   (  -0.04, -75.24) (   0.12, -75.96)   82.33                80
 04/03/2021   06:19:19   (  -0.04, -75.24) (  -0.90, -71.37)  440.90                80
 04/04/2021   18:40:55   (   0.03, -75.25) (  -0.27, -76.59)  152.38                80
 04/05/2021   18:24:38   (   0.03, -75.26) (   0.76, -72.00)  371.60                80
 04/07/2021   06:46:06   (  -0.02, -75.28) (   0.41, -77.18)  216.17                80
 04/08/2021   06:24:29   (  -0.02, -75.29) (  -0.61, -72.59)  308.09                80
 04/09/2021   18:46:05   (   0.01, -75.31) (  -0.54, -77.80)  283.89                80
 04/10/2021   18:29:47   (   0.01, -75.33) (   0.49, -73.22)  241.13                80
 04/12/2021   06:51:16   (  -0.01, -75.37) (   0.69, -78.39)  344.91                80