Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 3 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/21/2020   10:49:21   (   0.00,-137.21) (   0.53,-139.52)  264.20                80
 03/22/2020   10:27:45   (  -0.00,-137.21) (  -0.51,-134.95)  257.81                80
 03/23/2020   22:49:24   (   0.00,-137.21) (  -0.69,-140.17)  337.93                80
 03/24/2020   22:33:08   (   0.00,-137.21) (   0.36,-135.60)  184.07                80
 03/26/2020   10:54:39   (  -0.00,-137.22) (   0.78,-140.80)  408.19                80
 03/27/2020   10:33:03   (  -0.00,-137.21) (  -0.21,-136.22)  113.21                80
 03/28/2020   22:54:41   (   0.00,-137.20) (  -0.98,-141.44)  483.92                80
 03/29/2020   22:38:26   (   0.00,-137.20) (   0.07,-136.87)   37.11                80
 04/01/2020   10:41:01   (  -0.00,-137.17) (   0.08,-137.49)   36.32                80
 04/02/2020   10:19:25   (  -0.00,-137.16) (  -0.97,-132.91)  483.76                80