Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 11 1.  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   10:15:57   (   0.14,-128.46) (   0.92,-131.94)  396.56                80
 11/02/2019   09:59:42   (   0.15,-128.47) (  -0.09,-127.36)  126.17                80
 11/03/2019   22:18:42   (  -0.12,-128.44) (  -1.07,-132.61)  475.43                80
 11/04/2019   22:02:27   (  -0.13,-128.45) (  -0.06,-128.03)   47.30                80
 11/07/2019   10:02:24   (   0.12,-128.53) (   0.16,-128.67)   16.73                80
 11/09/2019   22:05:08   (  -0.11,-128.49) (  -0.30,-129.34)   96.33                80
 11/10/2019   21:48:53   (  -0.12,-128.50) (   0.71,-124.76)  425.93                80
 11/12/2019   10:07:45   (   0.10,-128.56) (   0.41,-129.97)  161.45                80
 11/13/2019   09:51:30   (   0.11,-128.56) (  -0.60,-125.40)  360.30                80
 11/14/2019   22:10:30   (  -0.09,-128.50) (  -0.54,-130.64)  243.12                80