Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 3 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)
 03/23/2020   22:49:24   (  -0.00,-137.21) (  -0.64,-140.18)  338.70                80
 03/24/2020   22:33:08   (   0.00,-137.21) (   0.34,-135.60)  183.99                80
 03/26/2020   10:54:39   (  -0.00,-137.23) (   0.79,-140.80)  406.80                80
 03/27/2020   10:33:04   (  -0.00,-137.23) (  -0.25,-136.23)  115.32                80
 03/28/2020   22:54:42   (   0.00,-137.23) (  -0.95,-141.45)  480.97                80
 03/29/2020   22:38:27   (   0.00,-137.23) (   0.10,-136.88)   40.83                80
 04/01/2020   10:41:01   (   0.00,-137.23) (   0.06,-137.49)   30.45                80
 04/02/2020   10:19:26   (  -0.00,-137.22) (  -0.99,-132.92)  490.36                80
 04/03/2020   22:41:04   (   0.00,-137.20) (  -0.19,-138.15)  107.90                80
 04/04/2020   22:24:48   (   0.00,-137.19) (   0.79,-133.56)  412.77                80