Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 10 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/23/2019   09:48:59   (   0.20,-128.29) (  -0.62,-124.77)  402.65                80
 10/24/2019   22:08:00   (  -0.18,-128.28) (  -0.56,-130.01)  196.50                80
 10/25/2019   21:51:44   (  -0.19,-128.30) (   0.45,-125.43)  327.39                80
 10/27/2019   10:10:36   (   0.16,-128.38) (   0.65,-130.65)  257.92                80
 10/28/2019   09:54:21   (   0.18,-128.40) (  -0.36,-126.07)  265.62                80
 10/29/2019   22:13:21   (  -0.15,-128.38) (  -0.80,-131.31)  334.40                80
 10/30/2019   21:57:06   (  -0.17,-128.39) (   0.21,-126.74)  188.93                80
 11/01/2019   10:15:58   (   0.14,-128.46) (   0.89,-131.95)  397.16                80
 11/02/2019   09:59:43   (   0.15,-128.48) (  -0.12,-127.38)  125.74                80
 11/03/2019   22:18:43   (  -0.12,-128.44) (  -1.04,-132.62)  475.34                80
 11/04/2019   22:02:27   (  -0.13,-128.46) (  -0.02,-128.04)   47.57                80