Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 4 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/15/2022   23:01:11   (   0.03,-137.18) (  -0.17,-138.13)  108.29                80
 04/16/2022   22:40:08   (   0.03,-137.18) (   0.84,-133.68)  398.92                80
 04/18/2022   11:05:06   (  -0.03,-137.18) (   0.42,-139.06)  214.76                80
 04/19/2022   10:44:02   (  -0.03,-137.17) (  -0.60,-134.61)  291.76                80
 04/20/2022   23:09:12   (   0.03,-137.14) (  -0.60,-140.03)  328.61                80
 04/21/2022   22:48:07   (   0.03,-137.13) (   0.36,-135.57)  177.48                80
 04/23/2022   11:13:07   (  -0.02,-137.11) (   0.83,-140.95)  437.66                80
 04/24/2022   10:52:02   (  -0.02,-137.09) (  -0.12,-136.49)   68.23                80
 04/26/2022   22:58:47   (   0.01,-137.04) (  -0.09,-137.46)   47.04                80
 04/27/2022   22:40:23   (   0.01,-137.03) (   0.93,-133.01)  458.74                80