Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 7 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/29/2021   18:40:17   (   0.11, -75.20) (  -0.02, -75.63)   50.25                80
 07/30/2021   18:24:00   (   0.10, -75.20) (   1.04, -71.05)  473.43                80
 08/01/2021   06:42:47   (  -0.11, -75.21) (   0.13, -76.22)  116.30                80
 08/02/2021   06:26:30   (  -0.11, -75.21) (  -0.93, -71.64)  407.30                80
 08/03/2021   18:45:25   (   0.13, -75.22) (  -0.26, -76.84)  185.83                80
 08/04/2021   18:29:07   (   0.12, -75.22) (   0.80, -72.26)  338.13                80
 08/06/2021   06:50:35   (  -0.14, -75.24) (   0.38, -77.43)  250.81                80
 08/07/2021   06:31:37   (  -0.14, -75.24) (  -0.68, -72.85)  273.19                80
 08/08/2021   18:50:32   (   0.15, -75.26) (  -0.50, -78.05)  319.41                80
 08/09/2021   18:34:15   (   0.14, -75.27) (   0.56, -73.47)  205.20                80
 08/11/2021   06:55:42   (  -0.15, -75.29) (   0.62, -78.64)  382.33                80