Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 11 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/02/2019   09:59:42   (   0.15,-128.47) (  -0.08,-127.36)  126.21                80
 11/03/2019   22:18:42   (  -0.12,-128.44) (  -1.08,-132.60)  475.51                80
 11/04/2019   22:02:27   (  -0.13,-128.45) (  -0.07,-128.03)   47.19                80
 11/07/2019   10:02:24   (   0.12,-128.52) (   0.17,-128.67)   17.01                80
 11/09/2019   22:05:08   (  -0.11,-128.49) (  -0.30,-129.33)   96.75                80
 11/10/2019   21:48:53   (  -0.12,-128.49) (   0.71,-124.76)  425.46                80
 11/12/2019   10:07:45   (   0.10,-128.55) (   0.42,-129.97)  161.96                80
 11/13/2019   09:51:30   (   0.11,-128.55) (  -0.59,-125.39)  359.72                80
 11/14/2019   22:10:30   (  -0.09,-128.50) (  -0.54,-130.64)  243.81                80
 11/15/2019   21:54:15   (  -0.10,-128.49) (   0.47,-126.06)  277.40                80