Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 10 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)
 10/31/2020   22:43:21   (  -0.02,-137.20) (  -0.22,-138.05)   96.36                80
 11/01/2020   22:27:04   (  -0.02,-137.20) (   0.82,-133.47)  425.39                80
 11/03/2020   10:45:53   (   0.02,-137.19) (   0.32,-138.66)  166.79                80
 11/04/2020   10:29:36   (   0.02,-137.18) (  -0.65,-134.07)  354.36                80
 11/05/2020   22:48:34   (  -0.01,-137.15) (  -0.51,-139.29)  243.88                80
 11/06/2020   22:32:18   (  -0.01,-137.14) (   0.53,-134.71)  276.76                80
 11/08/2020   10:51:07   (   0.01,-137.12) (   0.62,-139.90)  316.96                80
 11/09/2020   10:34:51   (   0.01,-137.10) (  -0.42,-135.32)  203.29                80
 11/10/2020   22:53:48   (  -0.00,-137.06) (  -0.79,-140.54)  395.99                80
 11/11/2020   22:37:31   (  -0.00,-137.04) (   0.25,-135.96)  124.03                80