Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 9 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)
 09/27/2020   10:47:06   (   0.04,-137.21) (   0.43,-139.09)  213.85                80
 09/28/2020   10:30:50   (   0.04,-137.21) (  -0.59,-134.51)  307.99                80
 09/29/2020   22:49:48   (  -0.03,-137.19) (  -0.59,-139.73)  289.45                80
 09/30/2020   22:33:31   (  -0.03,-137.19) (   0.44,-135.15)  232.30                80
 10/02/2020   10:52:21   (   0.03,-137.19) (   0.72,-140.34)  359.00                80
 10/03/2020   10:36:04   (   0.03,-137.18) (  -0.31,-135.76)  162.48                80
 10/04/2020   22:55:03   (  -0.03,-137.16) (  -0.87,-140.98)  435.85                80
 10/05/2020   22:38:46   (  -0.03,-137.15) (   0.16,-136.40)   85.17                80
 10/08/2020   10:41:18   (   0.03,-137.12) (   0.02,-137.00)   13.01                80