Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 1 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/30/2019   22:02:27   (   0.05,-127.53) (  -0.42,-129.66)  242.17                80
 01/31/2019   21:46:22   (   0.05,-127.49) (   0.57,-125.12)  269.32                80
 02/02/2019   10:05:29   (  -0.05,-127.49) (   0.62,-130.39)  330.63                80
 02/03/2019   09:49:23   (  -0.04,-127.44) (  -0.37,-125.85)  180.70                80
 02/04/2019   22:08:39   (   0.05,-127.29) (  -0.83,-131.15)  440.40                80
 02/05/2019   21:52:33   (   0.05,-127.24) (   0.16,-126.61)   70.61                80
 02/08/2019   09:52:56   (  -0.05,-127.18) (  -0.03,-127.35)   19.39                80
 02/09/2019   09:36:51   (  -0.04,-127.13) (  -1.02,-122.82)  491.58                80
 02/10/2019   21:58:45   (   0.04,-126.97) (  -0.23,-128.10)  130.09                80
 02/11/2019   21:37:20   (   0.04,-126.91) (   0.82,-123.58)  380.27                80