Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2015 4 23.  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)
 05/05/2015   16:49:12   ( -81.01,  55.88) 05/05/2015   16:50:20  ( -81.01,  55.91)    0.71                68
 05/05/2015   17:40:11   (  81.01,-136.80) 05/05/2015   17:41:05  (  81.01,-136.79)    0.32                54
 05/05/2015   18:31:15   ( -81.02,  30.26) 05/05/2015   18:31:50  ( -81.01,  30.44)    3.14                35
 05/05/2015   19:22:14   (  81.01,-162.41) 05/05/2015   19:22:35  (  81.01,-162.26)    2.63                21
 05/05/2015   20:13:17   ( -81.01,   5.02) 05/05/2015   20:13:20  ( -81.02,   4.98)    1.04                 3
 05/05/2015   21:04:15   (  81.00, 172.72) 05/05/2015   21:04:04  (  81.00, 172.64)    1.56                11
 05/05/2015   21:55:19   ( -81.01, -20.22) 05/05/2015   21:54:49  ( -81.01, -20.13)    1.67                30
 05/05/2015   22:46:18   (  81.01, 147.11) 05/05/2015   22:45:34  (  81.01, 147.17)    0.97                44