Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 4 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/16/2022   22:40:07   (   0.03,-137.18) (   0.83,-133.68)  398.79                80
 04/18/2022   11:05:07   (  -0.03,-137.17) (   0.37,-139.07)  215.10                80
 04/19/2022   10:44:02   (  -0.03,-137.16) (  -0.59,-134.60)  291.36                80
 04/20/2022   23:09:12   (   0.03,-137.14) (  -0.61,-140.03)  328.97                80
 04/21/2022   22:48:07   (   0.03,-137.12) (   0.35,-135.57)  177.07                80
 04/23/2022   11:13:06   (  -0.02,-137.10) (   0.84,-140.95)  438.28                80
 04/24/2022   10:52:03   (  -0.02,-137.09) (  -0.18,-136.50)   67.55                80
 04/26/2022   22:58:47   (   0.01,-137.04) (  -0.09,-137.45)   47.78                80
 04/27/2022   22:40:23   (   0.01,-137.02) (   0.93,-133.01)  457.96                80
 04/29/2022   11:02:42   (  -0.01,-137.00) (   0.32,-138.38)  157.90                80