Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 1 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/04/2020   22:48:06   (  -0.02,-137.23) (  -0.49,-139.33)  239.26                80
 01/05/2020   22:26:30   (  -0.02,-137.25) (   0.53,-134.76)  283.60                80
 01/07/2020   10:50:41   (   0.03,-137.26) (   0.62,-139.96)  307.11                80
 01/08/2020   10:29:06   (   0.03,-137.27) (  -0.41,-135.39)  215.09                80
 01/09/2020   22:53:25   (  -0.04,-137.27) (  -0.78,-140.62)  380.90                80
 01/10/2020   22:31:50   (  -0.03,-137.28) (   0.25,-136.04)  140.81                80
 01/12/2020   10:56:00   (   0.04,-137.28) (   0.95,-141.23)  451.34                80
 01/13/2020   10:34:25   (   0.04,-137.28) (  -0.07,-136.66)   69.92                80
 01/15/2020   22:37:09   (  -0.04,-137.27) (  -0.03,-137.33)    6.97                80