Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/07/2023   22:50:46   (  -0.03,-137.33) (   0.95,-132.99)  494.61                80
 01/09/2023   11:13:11   (   0.03,-137.33) (   0.27,-138.39)  121.23                80
 01/10/2023   10:52:11   (   0.04,-137.32) (  -0.73,-133.96)  384.22                80
 01/11/2023   23:14:46   (  -0.04,-137.31) (  -0.51,-139.39)  237.13                80
 01/12/2023   22:59:06   (  -0.04,-137.30) (   0.50,-134.95)  268.17                80
 01/14/2023   11:21:32   (   0.04,-137.29) (   0.73,-140.35)  348.41                80
 01/15/2023   11:00:32   (   0.04,-137.28) (  -0.28,-135.91)  156.38                80
 01/16/2023   23:23:06   (  -0.05,-137.25) (  -0.95,-141.35)  466.34                80
 01/17/2023   23:07:26   (  -0.05,-137.23) (   0.01,-136.90)   37.95                80
 01/20/2023   11:11:32   (   0.06,-137.18) (   0.20,-137.86)   76.82                80