Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 6 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/25/2021   06:44:48   (  -0.05, -75.15) (   0.36, -76.97)  206.89                80
 06/26/2021   06:28:31   (  -0.05, -75.14) (  -0.69, -72.38)  315.52                80
 06/27/2021   18:47:27   (   0.06, -75.14) (  -0.50, -77.59)  279.39                80
 06/28/2021   18:31:09   (   0.05, -75.14) (   0.55, -73.00)  243.85                80
 06/30/2021   06:49:56   (  -0.06, -75.14) (   0.65, -78.17)  345.63                80
 07/01/2021   06:33:38   (  -0.06, -75.14) (  -0.40, -73.58)  177.98                80
 07/02/2021   18:52:35   (   0.07, -75.15) (  -0.78, -78.79)  415.65                80
 07/03/2021   18:36:17   (   0.06, -75.16) (   0.27, -74.21)  108.50                80
 07/05/2021   06:55:04   (  -0.08, -75.18) (   0.87, -79.38)  479.56                80
 07/06/2021   06:38:47   (  -0.07, -75.19) (  -0.18, -74.80)   44.57                80