Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 5 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/04/2019   10:01:31   (   0.06,-128.16) (   0.22,-128.79)   72.59                80
 05/05/2019   09:40:07   (   0.07,-128.18) (  -0.83,-124.27)  446.01                80
 05/06/2019   22:02:05   (  -0.06,-128.22) (  -0.36,-129.58)  155.05                80
 05/07/2019   21:46:00   (  -0.06,-128.24) (   0.63,-125.04)  363.24                80
 05/09/2019   10:05:09   (   0.05,-128.26) (   0.51,-130.32)  235.81                80
 05/10/2019   09:49:05   (   0.06,-128.27) (  -0.47,-125.79)  281.91                80
 05/11/2019   22:08:22   (  -0.05,-128.29) (  -0.71,-131.10)  320.74                80
 05/12/2019   21:52:19   (  -0.06,-128.30) (   0.34,-126.58)  196.99                80
 05/14/2019   10:11:27   (   0.05,-128.32) (   0.86,-131.84)  402.45                80
 05/15/2019   09:55:24   (   0.05,-128.33) (  -0.18,-127.32)  114.92                80