Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 10 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/05/2019   10:11:49   (   0.27,-127.75) (   1.19,-131.77)  458.36                80
 10/06/2019   09:55:44   (   0.27,-127.79) (   0.16,-127.24)   62.14                80
 10/08/2019   21:56:16   (  -0.26,-127.82) (  -0.28,-128.03)   23.31                80
 10/09/2019   21:40:11   (  -0.27,-127.86) (   0.69,-123.49)  497.36                80
 10/11/2019   09:59:19   (   0.25,-127.98) (   0.44,-128.77)   91.18                80
 10/12/2019   09:43:15   (   0.26,-128.01) (  -0.60,-124.25)  429.11                80
 10/13/2019   22:02:31   (  -0.23,-128.00) (  -0.56,-129.56)  177.47                80
 10/14/2019   21:46:25   (  -0.25,-128.03) (   0.42,-125.02)  342.72                80
 10/16/2019   10:05:34   (   0.22,-128.14) (   0.72,-130.30)  246.43                80
 10/17/2019   09:49:29   (   0.24,-128.17) (  -0.32,-125.78)  273.16                80