Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/31/2020   21:58:49   (   0.07,-127.73) (   0.21,-127.21)   59.82                80
 09/03/2020   10:04:03   (  -0.08,-127.89) (  -0.08,-127.82)    7.19                80
 09/05/2020   22:06:44   (   0.08,-127.91) (  -0.05,-128.47)   63.78                80
 09/06/2020   21:45:08   (   0.08,-127.94) (   0.97,-123.89)  461.87                80
 09/08/2020   10:06:38   (  -0.08,-128.05) (   0.17,-129.08)  117.92                80
 09/09/2020   09:50:23   (  -0.08,-128.08) (  -0.91,-124.52)  407.44                80
 09/10/2020   22:12:00   (   0.09,-128.06) (  -0.30,-129.73)  190.64                80
 09/11/2020   21:50:24   (   0.09,-128.09) (   0.73,-125.15)  334.04                80
 09/13/2020   10:11:54   (  -0.10,-128.18) (   0.41,-130.35)  247.39                80