Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 1 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/23/2022   23:06:20   (   0.05,-137.23) (  -0.72,-140.66)  391.41                80
 01/24/2022   22:50:38   (   0.04,-137.23) (   0.29,-136.22)  115.71                80
 01/26/2022   11:12:59   (  -0.04,-137.22) (   0.95,-141.61)  499.60                80
 01/27/2022   10:54:37   (  -0.04,-137.22) (  -0.06,-137.16)    7.01                80
 01/29/2022   22:56:03   (   0.02,-137.19) (  -0.19,-138.13)  106.71                80
 01/30/2022   22:40:20   (   0.01,-137.18) (   0.83,-133.68)  399.25                80
 02/01/2022   11:02:41   (   0.02,-137.16) (   0.42,-139.07)  216.95                80
 02/02/2022   10:41:38   (   0.01,-137.15) (  -0.53,-134.61)  288.40                80
 02/03/2022   23:04:07   (  -0.00,-137.13) (  -0.66,-140.04)  332.15                80
 02/04/2022   22:48:25   (   0.00,-137.11) (   0.35,-135.59)  173.34                80