Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 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)
 11/01/2019   10:15:58   (   0.14,-128.46) (   0.90,-131.95)  396.55                80
 11/02/2019   09:59:42   (   0.15,-128.48) (  -0.11,-127.37)  126.24                80
 11/03/2019   22:18:43   (  -0.12,-128.44) (  -1.05,-132.61)  475.22                80
 11/04/2019   22:02:27   (  -0.13,-128.45) (  -0.04,-128.04)   47.51                80
 11/07/2019   10:02:24   (   0.12,-128.53) (   0.14,-128.67)   16.33                80
 11/09/2019   22:05:09   (  -0.11,-128.50) (  -0.27,-129.34)   95.75                80
 11/10/2019   21:48:53   (  -0.12,-128.50) (   0.75,-124.77)  426.63                80
 11/12/2019   10:07:45   (   0.10,-128.56) (   0.44,-129.97)  160.72                80
 11/13/2019   09:51:29   (   0.11,-128.56) (  -0.57,-125.39)  361.14                80