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) (  -0.28,-128.03)   23.56                80
 10/09/2019   21:40:11   (  -0.27,-127.85) (   0.70,-123.49)  497.03                80
 10/11/2019   09:59:19   (   0.25,-127.97) (   0.44,-128.77)   91.70                80
 10/12/2019   09:43:15   (   0.26,-128.00) (  -0.60,-124.25)  428.47                80
 10/13/2019   22:02:31   (  -0.23,-127.99) (  -0.56,-129.56)  178.25                80
 10/14/2019   21:46:25   (  -0.25,-128.02) (   0.42,-125.02)  341.86                80
 10/16/2019   10:05:34   (   0.22,-128.13) (   0.71,-130.30)  247.45                80
 10/17/2019   09:49:28   (   0.24,-128.16) (  -0.27,-125.77)  272.03                80
 10/18/2019   22:08:45   (  -0.21,-128.13) (  -0.88,-131.08)  336.38                80
 10/19/2019   21:52:40   (  -0.22,-128.15) (   0.16,-126.56)  182.68                80