Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 11 22.  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,-128.49) (   0.95,-132.55)  462.51                80
 11/23/2019   10:02:11   (   0.05,-128.49) (  -0.06,-127.98)   58.26                80
 11/25/2019   22:02:15   (  -0.04,-128.43) (  -0.10,-128.63)   23.66                80
 11/26/2019   21:45:59   (  -0.06,-128.42) (   0.92,-124.06)  496.78                80
 11/28/2019   10:04:52   (   0.04,-128.43) (   0.21,-129.27)   95.26                80
 11/29/2019   09:48:36   (   0.05,-128.42) (  -0.81,-124.69)  424.79                80
 11/30/2019   22:07:35   (  -0.02,-128.36) (  -0.36,-129.93)  178.82                80
 12/01/2019   21:51:20   (  -0.03,-128.34) (   0.66,-125.35)  341.14                80
 12/03/2019   10:10:12   (   0.01,-128.35) (   0.48,-130.56)  251.40                80
 12/04/2019   09:53:56   (   0.02,-128.34) (  -0.48,-125.98)  268.38                80
 12/05/2019   22:12:55   (   0.00,-128.27) (  -0.67,-131.21)  335.64                80