Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/12/2021   06:39:12   (  -0.03, -75.19) (   0.10, -75.66)   54.15                80
 03/13/2021   06:17:35   (  -0.03, -75.20) (  -0.97, -71.08)  468.98                80
 03/14/2021   18:39:12   (   0.03, -75.21) (  -0.19, -76.30)  124.21                80
 03/15/2021   18:22:55   (   0.03, -75.22) (   0.83, -71.71)  399.49                80
 03/17/2021   06:44:23   (  -0.03, -75.23) (   0.32, -76.90)  189.59                80
 03/18/2021   06:22:46   (  -0.03, -75.24) (  -0.70, -72.31)  334.07                80
 03/19/2021   18:44:22   (   0.03, -75.25) (  -0.50, -77.51)  258.65                80
 03/20/2021   18:28:06   (   0.03, -75.26) (   0.57, -72.94)  265.49                80
 03/22/2021   06:49:33   (  -0.02, -75.28) (   0.64, -78.11)  322.64                80
 03/23/2021   06:27:57   (  -0.02, -75.29) (  -0.44, -73.53)  201.47                80
 03/24/2021   18:49:33   (   0.01, -75.31) (  -0.75, -78.74)  390.75                80
 03/25/2021   18:33:15   (   0.00, -75.33) (   0.27, -74.15)  133.90                80