Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 1 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/30/2020   22:53:07   (  -0.04,-137.21) (  -0.90,-141.16)  449.51                80
 01/31/2020   22:36:50   (  -0.04,-137.21) (   0.08,-136.57)   71.83                80
 02/03/2020   10:39:25   (   0.05,-137.19) (   0.06,-137.19)    1.39                80
 02/05/2020   22:39:30   (  -0.06,-137.16) (  -0.18,-137.86)   78.67                80
 02/06/2020   22:23:13   (  -0.06,-137.15) (   0.79,-133.27)  441.41                80
 02/08/2020   10:44:44   (   0.07,-137.12) (   0.38,-138.47)  153.38                80
 02/09/2020   10:23:08   (   0.06,-137.10) (  -0.65,-133.89)  366.13                80
 02/10/2020   22:44:47   (  -0.07,-137.07) (  -0.56,-139.12)  234.01                80
 02/11/2020   22:25:52   (  -0.07,-137.05) (   0.48,-134.54)  285.31                80