Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 1 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/13/2022   22:52:49   (   0.03,-137.18) (   0.13,-136.82)   40.93                80
 01/16/2022   10:56:48   (  -0.02,-137.15) (   0.09,-137.76)   69.03                80
 01/17/2022   10:38:24   (  -0.01,-137.14) (  -0.86,-133.31)  436.56                80
 01/18/2022   22:58:13   (   0.01,-137.11) (  -0.37,-138.73)  185.32                80
 01/19/2022   22:42:31   (   0.01,-137.09) (   0.64,-134.28)  319.84                80
 01/21/2022   11:04:52   (  -0.02,-137.07) (   0.59,-139.67)  297.37                80
 01/22/2022   10:43:50   (  -0.02,-137.05) (  -0.42,-135.23)  207.40                80
 01/23/2022   23:06:19   (   0.02,-137.00) (  -0.80,-140.65)  415.58                80
 01/24/2022   22:50:37   (   0.02,-136.98) (   0.22,-136.21)   88.90                80