Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2023 4 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/21/2023   19:17:50   (   0.03, -75.20) (  -0.62, -78.19)  340.32                80
 04/22/2023   18:56:47   (   0.03, -75.20) (   0.36, -73.73)  167.40                80
 04/24/2023   07:21:46   (  -0.03, -75.20) (   0.88, -79.10)  444.35                80
 04/25/2023   07:00:44   (  -0.03, -75.21) (  -0.17, -74.65)   63.68                80
 04/27/2023   19:07:29   (   0.02, -75.21) (  -0.07, -75.61)   44.84                80
 04/28/2023   18:46:26   (   0.02, -75.22) (   0.93, -71.15)  463.88                80
 04/30/2023   07:11:25   (  -0.01, -75.24) (   0.30, -76.52)  146.24                80
 05/01/2023   06:50:23   (  -0.01, -75.25) (  -0.76, -72.08)  362.95                80
 05/02/2023   19:15:31   (   0.01, -75.27) (  -0.50, -77.48)  252.45                80
 05/03/2023   18:54:28   (   0.01, -75.28) (   0.51, -73.02)  257.08                80