Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/27/2023   21:42:58   (  -0.01,-118.95) (   0.69,-115.76)  362.66                80
 01/29/2023   10:02:36   (   0.01,-117.18) (   0.92,-121.07)  444.83                80
 01/30/2023   09:44:13   (   0.02,-116.02) (   0.11,-116.59)   63.70                80
 01/31/2023   09:28:28   (   0.02,-114.87) (  -0.64,-112.09)  317.33                80
 02/01/2023   21:48:15   (  -0.02,-113.10) (  -0.99,-117.43)  493.40                80
 02/02/2023   21:29:50   (  -0.02,-111.94) (  -0.23,-112.93)  112.29                80
 02/03/2023   21:14:06   (  -0.02,-110.79) (   0.54,-108.44)  268.63                80
 02/06/2023   09:15:18   (   0.02,-107.86) (   0.37,-109.24)  157.98                80
 02/07/2023   08:59:34   (   0.02,-106.70) (  -0.40,-104.74)  223.02                80
 02/09/2023   21:00:56   (  -0.03,-103.78) (  -0.42,-105.59)  206.15                80