Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 1 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2022   11:07:04   (  -0.04,-137.21) (   0.64,-140.29)  350.95                80
 01/11/2022   10:48:42   (  -0.03,-137.20) (  -0.37,-135.85)  155.45                80
 01/12/2022   23:08:31   (   0.03,-137.19) (  -0.88,-141.27)  465.08                80
 01/13/2022   22:52:49   (   0.02,-137.17) (   0.13,-136.82)   41.09                80
 01/16/2022   10:54:07   (   0.01,-137.15) (   0.15,-137.75)   69.09                80
 01/17/2022   10:35:44   (   0.02,-137.13) (  -0.86,-133.31)  436.28                80
 01/18/2022   22:58:13   (  -0.02,-137.10) (  -0.37,-138.73)  185.85                80
 01/19/2022   22:42:31   (  -0.02,-137.08) (   0.64,-134.28)  319.11                80
 01/21/2022   11:04:52   (   0.01,-137.05) (   0.60,-139.67)  298.28                80
 01/22/2022   10:43:50   (   0.01,-137.03) (  -0.41,-135.23)  206.29                80
 01/23/2022   23:06:18   (  -0.01,-136.99) (  -0.86,-140.64)  416.79                80