Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2023 7 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/09/2023   07:24:25   (   0.01, -75.19) (   0.81, -78.68)  398.11                80
 07/10/2023   07:03:22   (   0.01, -75.21) (  -0.22, -74.23)  111.37                80
 07/12/2023   19:10:08   (  -0.01, -75.26) (  -0.02, -75.18)    8.00                80
 07/15/2023   07:14:07   (   0.02, -75.30) (   0.19, -76.12)   92.53                80
 07/16/2023   06:53:03   (   0.03, -75.32) (  -0.78, -71.66)  417.69                80
 07/17/2023   19:18:13   (  -0.04, -75.36) (  -0.41, -77.07)  194.70                80
 07/18/2023   18:57:09   (  -0.04, -75.39) (   0.56, -72.61)  315.98                80
 07/20/2023   07:22:10   (   0.04, -75.43) (   0.63, -77.99)  292.79                80
 07/21/2023   07:01:08   (   0.04, -75.46) (  -0.41, -73.55)  218.29                80
 07/22/2023   19:26:16   (  -0.05, -75.51) (  -0.84, -78.95)  392.80                80