Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/09/2020   22:14:08   (   0.33,-128.40) (  -0.32,-131.44)  346.04                80
 03/10/2020   21:57:51   (   0.34,-128.39) (   0.67,-126.85)  174.64                80
 03/12/2020   10:19:22   (  -0.33,-128.35) (   0.51,-132.05)  421.64                80
 03/13/2020   09:57:46   (  -0.33,-128.34) (  -0.53,-127.47)   98.38                80
 03/14/2020   22:19:26   (   0.32,-128.33) (  -0.63,-132.71)  498.00                80
 03/15/2020   22:03:09   (   0.33,-128.32) (   0.35,-128.12)   22.13                80
 03/18/2020   10:05:44   (  -0.31,-128.26) (  -0.21,-128.74)   55.13                80
 03/19/2020   09:44:09   (  -0.32,-128.24) (  -1.25,-124.17)  464.27                80
 03/20/2020   22:05:47   (   0.30,-128.22) (   0.05,-129.39)  132.83                80
 03/21/2020   21:49:31   (   0.31,-128.20) (   1.09,-124.82)  386.84                80