Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 7 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/14/2019   22:08:49   (   0.18,-127.75) (  -0.58,-131.18)  389.97                80
 07/15/2019   21:52:45   (   0.17,-127.79) (   0.43,-126.64)  130.54                80
 07/17/2019   10:11:53   (  -0.20,-127.88) (   0.73,-131.92)  461.05                80
 07/18/2019   09:55:50   (  -0.19,-127.91) (  -0.33,-127.40)   59.21                80
 07/20/2019   21:56:21   (   0.20,-127.96) (   0.13,-128.16)   24.44                80
 07/21/2019   21:40:17   (   0.19,-127.99) (   1.14,-123.63)  495.97                80
 07/23/2019   09:59:26   (  -0.21,-128.07) (  -0.04,-128.92)   96.01                80
 07/24/2019   09:43:22   (  -0.20,-128.10) (  -1.05,-124.39)  423.71                80
 07/25/2019   22:02:39   (   0.23,-128.10) (  -0.11,-129.70)  181.09                80
 07/26/2019   21:46:35   (   0.22,-128.13) (   0.90,-125.17)  338.37                80