Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 9 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/26/2020   22:08:50   (   0.13,-128.36) (  -0.03,-128.92)   64.31                80
 09/27/2020   21:47:15   (   0.13,-128.37) (   1.05,-124.35)  458.78                80
 09/29/2020   10:08:44   (  -0.13,-128.43) (   0.11,-129.54)  126.56                80
 09/30/2020   09:52:28   (  -0.13,-128.44) (  -0.92,-124.96)  396.67                80
 10/01/2020   22:14:06   (   0.13,-128.41) (  -0.26,-130.19)  201.81                80
 10/02/2020   21:52:29   (   0.13,-128.42) (   0.76,-125.60)  320.99                80
 10/04/2020   10:13:59   (  -0.13,-128.47) (   0.39,-130.79)  265.23                80
 10/05/2020   09:57:42   (  -0.13,-128.47) (  -0.63,-126.21)  257.44                80
 10/06/2020   22:19:21   (   0.13,-128.44) (  -0.55,-131.44)  341.73                80
 10/07/2020   21:57:44   (   0.14,-128.44) (   0.48,-126.85)  180.15                80