Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/03/2021   06:52:56   (  -0.02, -75.18) (   0.77, -78.65)  395.67                80
 05/04/2021   06:31:18   (  -0.02, -75.17) (  -0.26, -74.06)  126.58                80
 05/05/2021   18:52:55   (   0.01, -75.17) (  -0.89, -79.28)  467.84                80
 05/06/2021   18:36:37   (   0.01, -75.17) (   0.14, -74.69)   55.24                80
 05/09/2021   06:39:08   (  -0.01, -75.18) (  -0.01, -75.28)   11.52                80
 05/11/2021   18:39:06   (   0.01, -75.19) (  -0.16, -75.90)   81.00                80
 05/12/2021   18:22:48   (   0.01, -75.20) (   0.87, -71.31)  442.76                80
 05/14/2021   06:44:17   (  -0.01, -75.21) (   0.29, -76.49)  145.76                80
 05/15/2021   06:22:39   (  -0.01, -75.22) (  -0.75, -71.90)  377.97                80
 05/16/2021   18:44:16   (   0.00, -75.23) (  -0.41, -77.12)  215.05                80