Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 10 8.  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) (  -0.30,-128.02)   23.32                80
 10/09/2019   21:40:11   (  -0.27,-127.85) (   0.73,-123.50)  497.14                80
 10/11/2019   09:59:20   (   0.25,-127.97) (   0.40,-128.78)   91.39                80
 10/12/2019   09:43:14   (   0.25,-128.01) (  -0.58,-124.24)  428.81                80
 10/13/2019   22:02:31   (  -0.23,-127.99) (  -0.58,-129.55)  178.08                80
 10/14/2019   21:46:25   (  -0.25,-128.02) (   0.40,-125.02)  342.01                80
 10/16/2019   10:05:33   (   0.22,-128.14) (   0.74,-130.30)  247.14                80
 10/17/2019   09:49:29   (   0.24,-128.16) (  -0.30,-125.77)  272.35                80
 10/18/2019   22:08:45   (  -0.21,-128.13) (  -0.85,-131.09)  336.24                80
 10/19/2019   21:52:40   (  -0.22,-128.15) (   0.13,-126.55)  182.79                80
 10/21/2019   10:11:48   (   0.19,-128.26) (   1.00,-131.83)  407.75                80
 10/22/2019   09:55:44   (   0.20,-128.27) (  -0.04,-127.31)  110.80                80