Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 11 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/22/2019   10:18:26   (   0.04,-128.50) (   0.95,-132.55)  462.50                80
 11/23/2019   10:02:11   (   0.05,-128.49) (  -0.07,-127.98)   58.27                80
 11/25/2019   22:02:15   (  -0.04,-128.43) (  -0.09,-128.64)   23.72                80
 11/26/2019   21:45:59   (  -0.06,-128.42) (   0.93,-124.06)  496.73                80
 11/28/2019   10:04:52   (   0.04,-128.43) (   0.20,-129.27)   95.28                80
 11/29/2019   09:48:35   (   0.05,-128.42) (  -0.76,-124.68)  424.80                80
 11/30/2019   22:07:34   (  -0.03,-128.36) (  -0.40,-129.92)  178.88                80
 12/01/2019   21:51:19   (  -0.03,-128.34) (   0.62,-125.34)  341.09                80
 12/03/2019   10:10:11   (   0.01,-128.35) (   0.52,-130.56)  251.35                80
 12/04/2019   09:53:56   (   0.02,-128.34) (  -0.50,-125.98)  268.41                80