Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2015 4 10.  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, -97.22) 04/22/2015   15:02:57  (  81.02, -97.33)    2.05                69
 04/22/2015   15:52:54   ( -81.01,  70.10) 04/22/2015   15:53:42  ( -81.02,  69.95)    2.70                48
 04/22/2015   16:43:50   (  81.01,-122.43) 04/22/2015   16:44:26  (  81.00,-122.42)    0.34                36
 04/22/2015   17:34:56   ( -81.00,  44.88) 04/22/2015   17:35:11  ( -81.01,  44.86)    0.28                15
 04/22/2015   18:25:53   (  81.01,-148.03) 04/22/2015   18:25:56  (  81.01,-147.87)    2.66                 3
 04/22/2015   19:16:58   ( -81.00,  19.65) 04/22/2015   19:16:40  ( -80.99,  19.77)    2.13                18
 04/22/2015   20:07:54   (  81.00,-172.87) 04/22/2015   20:07:25  (  81.00,-172.96)    1.66                29
 04/22/2015   20:59:00   ( -80.99,  -5.57) 04/22/2015   20:58:10  ( -81.00,  -5.69)    2.08                50