Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 6 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/14/2020   18:16:14   (  -0.01, -75.18) (   0.85, -71.24)  448.97                80
 06/16/2020   06:37:44   (   0.01, -75.19) (   0.26, -76.44)  142.00                80
 06/17/2020   06:16:08   (   0.00, -75.20) (  -0.74, -71.86)  380.80                80
 06/18/2020   18:37:47   (  -0.00, -75.22) (  -0.42, -77.09)  212.94                80
 06/19/2020   18:21:31   (   0.00, -75.23) (   0.59, -72.51)  310.19                80
 06/21/2020   06:43:01   (  -0.01, -75.25) (   0.53, -77.71)  280.11                80
 06/22/2020   06:21:25   (  -0.01, -75.26) (  -0.48, -73.12)  243.01                80
 06/23/2020   18:43:04   (   0.01, -75.28) (  -0.67, -78.36)  350.47                80
 06/24/2020   18:26:47   (   0.01, -75.29) (   0.34, -73.77)  173.16                80
 06/26/2020   06:48:17   (  -0.00, -75.32) (   0.84, -78.96)  416.05                80
 06/27/2020   06:26:41   (  -0.00, -75.33) (  -0.23, -74.39)  107.74                80