Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 8 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/26/2019   22:27:58   (   0.03,-137.21) (   0.66,-134.49)  310.51                80
 08/28/2019   10:49:30   (  -0.03,-137.19) (   0.55,-139.68)  284.49                80
 08/29/2019   10:27:55   (  -0.03,-137.18) (  -0.51,-135.12)  235.75                80
 08/30/2019   22:49:35   (   0.03,-137.17) (  -0.66,-140.36)  362.65                80
 08/31/2019   22:33:20   (   0.03,-137.16) (   0.34,-135.78)  157.43                80
 09/02/2019   10:54:52   (  -0.03,-137.15) (   0.80,-141.00)  438.14                80
 09/03/2019   10:33:17   (  -0.03,-137.13) (  -0.19,-136.42)   81.60                80
 09/05/2019   22:38:42   (   0.03,-137.10) (   0.02,-137.08)    2.08                80
 09/08/2019   10:41:18   (  -0.04,-137.05) (   0.11,-137.72)   76.16                80