Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 10 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/11/2019   09:59:20   (   0.25,-127.96) (   0.40,-128.78)   92.22                80
 10/12/2019   09:43:14   (   0.26,-128.00) (  -0.57,-124.24)  427.91                80
 10/13/2019   22:02:30   (  -0.23,-127.99) (  -0.58,-129.55)  178.09                80
 10/14/2019   21:46:26   (  -0.25,-128.02) (   0.45,-125.03)  341.97                80
 10/16/2019   10:05:33   (   0.22,-128.13) (   0.74,-130.30)  248.19                80
 10/17/2019   09:49:29   (   0.24,-128.15) (  -0.30,-125.77)  271.22                80
 10/18/2019   22:08:45   (  -0.21,-128.13) (  -0.85,-131.08)  336.58                80
 10/19/2019   21:52:40   (  -0.22,-128.15) (   0.13,-126.55)  182.42                80
 10/21/2019   10:11:48   (   0.19,-128.24) (   1.01,-131.83)  409.03                80
 10/22/2019   09:55:44   (   0.20,-128.26) (  -0.03,-127.31)  109.44                80
 10/23/2019   22:14:59   (  -0.18,-128.22) (  -1.18,-132.61)  499.88                80
 10/24/2019   21:58:54   (  -0.19,-128.24) (  -0.13,-128.08)   18.64                80