Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/06/2023   23:06:26   (  -0.02,-137.33) (  -0.03,-137.44)   11.52                80
 01/07/2023   22:50:46   (  -0.02,-137.33) (   0.98,-133.00)  494.41                80
 01/09/2023   11:13:11   (   0.03,-137.33) (   0.25,-138.40)  121.35                80
 01/10/2023   10:52:12   (   0.03,-137.32) (  -0.76,-133.96)  384.14                80
 01/11/2023   23:14:46   (  -0.03,-137.31) (  -0.49,-139.39)  237.26                80
 01/12/2023   22:59:07   (  -0.03,-137.30) (   0.52,-134.96)  268.07                80
 01/14/2023   11:21:32   (   0.04,-137.29) (   0.71,-140.35)  348.43                80
 01/15/2023   11:00:32   (   0.04,-137.28) (  -0.25,-135.91)  156.39                80
 01/16/2023   23:23:06   (  -0.04,-137.25) (  -0.98,-141.34)  466.35                80
 01/17/2023   23:07:26   (  -0.05,-137.24) (   0.04,-136.91)   37.92                80