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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/10/2019   21:46:27   (   0.14,-127.60) (   0.68,-125.12)  283.47                80
 07/12/2019   10:05:37   (  -0.16,-127.70) (   0.42,-130.40)  307.46                80
 07/13/2019   09:49:32   (  -0.16,-127.74) (  -0.59,-125.87)  213.40                80
 07/14/2019   22:08:49   (   0.18,-127.77) (  -0.57,-131.18)  388.89                80
 07/15/2019   21:52:45   (   0.17,-127.80) (   0.43,-126.65)  131.92                80
 07/17/2019   10:11:53   (  -0.20,-127.90) (   0.73,-131.92)  459.32                80
 07/18/2019   09:55:49   (  -0.19,-127.93) (  -0.28,-127.39)   61.26                80
 07/20/2019   21:56:22   (   0.20,-127.99) (   0.13,-128.17)   21.49                80
 07/21/2019   21:40:17   (   0.19,-128.02) (   1.14,-123.63)  499.21                80
 07/23/2019   09:59:26   (  -0.21,-128.11) (  -0.04,-128.92)   92.45                80
 07/24/2019   09:43:22   (  -0.20,-128.14) (  -1.05,-124.39)  427.58                80