Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 10 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/08/2019   21:56:16   (  -0.26,-127.82) (  -0.32,-128.02)   23.46                80
 10/09/2019   21:40:11   (  -0.27,-127.85) (   0.71,-123.49)  497.04                80
 10/11/2019   09:59:19   (   0.25,-127.97) (   0.42,-128.78)   91.83                80
 10/12/2019   09:43:14   (   0.26,-128.00) (  -0.56,-124.24)  428.31                80
 10/13/2019   22:02:30   (  -0.23,-127.99) (  -0.60,-129.55)  178.36                80
 10/14/2019   21:46:26   (  -0.25,-128.02) (   0.44,-125.03)  341.70                80
 10/16/2019   10:05:34   (   0.22,-128.13) (   0.69,-130.31)  247.76                80
 10/17/2019   09:49:29   (   0.24,-128.16) (  -0.29,-125.77)  271.68                80
 10/18/2019   22:08:45   (  -0.21,-128.13) (  -0.86,-131.08)  336.70                80
 10/19/2019   21:52:39   (  -0.22,-128.15) (   0.12,-126.55)  182.32                80
 10/21/2019   10:11:48   (   0.20,-128.25) (   1.01,-131.83)  408.53                80