Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2015 5 6.  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)
 05/18/2015   21:09:33   ( -81.02,  -9.60) 05/18/2015   21:10:39  ( -81.03,  -9.71)    2.08                66
 05/18/2015   22:00:35   (  81.02, 157.89) 05/18/2015   22:01:23  (  81.01, 158.02)    2.42                48
 05/18/2015   22:51:35   ( -81.02, -34.84) 05/18/2015   22:52:08  ( -81.02, -34.75)    1.62                33
 05/18/2015   23:42:37   (  81.01, 132.65) 05/18/2015   23:42:53  (  81.01, 132.61)    0.67                16
 05/19/2015   00:33:37   ( -81.01, -60.09) 05/19/2015   00:33:38  ( -81.02, -60.17)    1.32                 1
 05/19/2015   01:24:40   (  81.02, 107.03) 05/19/2015   01:24:23  (  81.02, 107.20)    2.90                17
 05/19/2015   02:15:39   ( -81.01, -85.34) 05/19/2015   02:15:07  ( -81.00, -85.21)    2.35                32
 05/19/2015   03:06:41   (  81.01,  82.16) 05/19/2015   03:05:52  (  81.00,  82.15)    0.55                49