Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2015 4 15.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/22/2015   15:01:48   (  81.01, -97.07) 04/22/2015   15:02:57  (  81.01, -97.24)    2.99                69
 04/22/2015   15:52:54   ( -81.01,  70.21) 04/22/2015   15:53:41  ( -81.00,  70.37)    2.96                47
 04/22/2015   16:43:50   (  81.00,-122.29) 04/22/2015   16:44:26  (  81.00,-122.33)    0.80                36
 04/22/2015   17:34:56   ( -81.00,  44.98) 04/22/2015   17:35:11  ( -81.00,  44.91)    1.26                15
 04/22/2015   18:25:53   (  81.00,-147.89) 04/22/2015   18:25:56  (  81.00,-147.79)    1.65                 3
 04/22/2015   19:16:58   ( -81.00,  19.76) 04/22/2015   19:16:40  ( -80.99,  19.82)    1.23                18
 04/22/2015   20:07:55   (  81.00,-173.11) 04/22/2015   20:07:26  (  81.01,-173.25)    2.67                29
 04/22/2015   20:59:00   ( -80.99,  -5.46) 04/22/2015   20:58:10  ( -80.99,  -5.64)    3.08                50