Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/12/2023   22:59:06   (  -0.00,-137.31) (   0.51,-134.95)  268.01                80
 01/14/2023   11:21:32   (   0.00,-137.29) (   0.72,-140.35)  349.03                80
 01/15/2023   11:00:32   (   0.00,-137.28) (  -0.30,-135.91)  155.82                80
 01/16/2023   23:23:07   (  -0.00,-137.26) (  -0.94,-141.35)  466.44                80
 01/17/2023   23:07:27   (  -0.00,-137.24) (   0.08,-136.91)   37.84                80
 01/20/2023   11:11:32   (   0.01,-137.19) (   0.18,-137.86)   77.42                80
 01/21/2023   10:50:32   (   0.01,-137.16) (  -0.84,-133.43)  426.13                80
 01/22/2023   23:13:06   (  -0.01,-137.12) (  -0.43,-138.85)  197.82                80
 01/23/2023   22:57:26   (  -0.01,-137.10) (   0.59,-134.42)  305.63                80
 01/25/2023   11:19:52   (   0.01,-137.06) (   0.63,-139.82)  314.04                80