Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 11 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/04/2019   22:02:27   (  -0.13,-128.45) (  -0.03,-128.03)   47.26                80
 11/07/2019   10:02:24   (   0.12,-128.52) (   0.13,-128.67)   17.18                80
 11/09/2019   22:05:08   (  -0.11,-128.48) (  -0.32,-129.33)   96.86                80
 11/10/2019   21:48:52   (  -0.12,-128.49) (   0.70,-124.75)  425.34                80
 11/12/2019   10:07:45   (   0.10,-128.55) (   0.42,-129.97)  162.17                80
 11/13/2019   09:51:29   (   0.11,-128.55) (  -0.59,-125.39)  359.47                80
 11/14/2019   22:10:30   (  -0.08,-128.49) (  -0.54,-130.64)  244.11                80
 11/15/2019   21:54:13   (  -0.10,-128.48) (   0.42,-126.05)  277.08                80
 11/17/2019   10:13:05   (   0.07,-128.53) (   0.70,-131.26)  312.04                80