Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/08/2021   06:54:57   (  -0.06, -75.20) (   0.57, -78.00)  318.57                80
 10/09/2021   06:33:18   (  -0.07, -75.20) (  -0.45, -73.40)  204.42                80
 10/10/2021   18:57:34   (   0.06, -75.20) (  -0.68, -78.62)  389.36                80
 10/11/2021   18:35:56   (   0.07, -75.19) (   0.33, -74.02)  133.73                80
 10/13/2021   07:00:02   (  -0.06, -75.19) (   0.83, -79.19)  455.37                80
 10/14/2021   06:38:24   (  -0.07, -75.19) (  -0.19, -74.60)   67.94                80
 10/16/2021   18:41:02   (   0.07, -75.21) (   0.07, -75.22)    1.18                80
 10/19/2021   06:46:09   (  -0.06, -75.24) (   0.07, -75.79)   63.39                80
 10/20/2021   06:24:31   (  -0.07, -75.25) (  -0.95, -71.20)  461.28                80
 10/21/2021   18:48:47   (   0.05, -75.27) (  -0.18, -76.41)  129.68                80