Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 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)
 08/26/2020   10:56:09   (   0.04,-137.20) (   0.81,-140.74)  402.76                80
 08/27/2020   10:34:32   (   0.03,-137.20) (  -0.21,-136.15)  119.79                80
 08/28/2020   22:56:11   (  -0.03,-137.20) (  -0.94,-141.38)  476.11                80
 08/29/2020   22:39:54   (  -0.02,-137.20) (   0.08,-136.80)   46.06                80
 09/01/2020   10:39:48   (  -0.00,-137.22) (   0.05,-137.42)   22.89                80
 09/02/2020   10:23:31   (  -0.00,-137.22) (  -0.97,-132.83)  499.36                80
 09/03/2020   22:42:30   (   0.00,-137.21) (  -0.18,-138.06)   96.99                80
 09/04/2020   22:26:13   (  -0.00,-137.21) (   0.84,-133.48)  425.05                80
 09/06/2020   10:45:04   (   0.00,-137.21) (   0.30,-138.68)  166.32                80
 09/07/2020   10:28:47   (   0.00,-137.21) (  -0.72,-134.10)  355.33                80
 09/08/2020   22:47:44   (   0.00,-137.19) (  -0.49,-139.31)  242.32                80