Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 6 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/17/2019   10:08:52   (  -0.05,-128.25) (   0.34,-130.15)  215.43                80
 06/18/2019   09:52:36   (  -0.04,-128.23) (  -0.64,-125.57)  303.35                80
 06/19/2019   22:11:38   (   0.07,-128.19) (  -0.52,-130.81)  298.90                80
 06/20/2019   21:55:22   (   0.06,-128.17) (   0.47,-126.23)  220.10                80
 06/22/2019   10:14:14   (  -0.08,-128.14) (   0.66,-131.45)  377.04                80
 06/23/2019   09:57:59   (  -0.07,-128.11) (  -0.32,-126.87)  141.47                80
 06/24/2019   22:17:00   (   0.09,-128.07) (  -0.83,-132.12)  461.91                80
 06/25/2019   22:00:46   (   0.08,-128.04) (   0.22,-127.55)   56.81                80
 06/28/2019   10:00:43   (  -0.09,-127.98) (  -0.06,-128.19)   22.73                80
 06/29/2019   09:44:27   (  -0.08,-127.95) (  -1.05,-123.61)  495.02                80