Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 1 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/28/2019   09:59:17   (  -0.06,-127.73) (   0.23,-128.89)  133.26                80
 01/29/2019   09:43:12   (  -0.05,-127.69) (  -0.82,-124.37)  378.72                80
 01/30/2019   22:02:27   (   0.05,-127.54) (  -0.44,-129.65)  242.01                80
 01/31/2019   21:46:22   (   0.05,-127.49) (   0.60,-125.13)  269.66                80
 02/02/2019   10:05:29   (  -0.05,-127.50) (   0.58,-130.40)  329.71                80
 02/03/2019   09:49:24   (  -0.04,-127.45) (  -0.41,-125.86)  181.76                80
 02/04/2019   22:08:39   (   0.05,-127.30) (  -0.79,-131.16)  439.48                80
 02/05/2019   21:52:34   (   0.04,-127.25) (   0.20,-126.62)   71.68                80
 02/08/2019   09:52:56   (  -0.04,-127.20) (  -0.01,-127.35)   17.37                80
 02/09/2019   09:36:50   (  -0.04,-127.15) (  -1.00,-122.81)  493.58                80