Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 3 25.  Predictions up to the next  14.0 days:

     Date     Time(AURA) AURA Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/27/2015   08:08:25   (  78.51, -50.81) 03/27/2015   08:07:48  (  78.50, -50.88)    1.57                37
 03/27/2015   08:57:41   ( -78.98, 119.44) 03/27/2015   08:58:21  ( -78.98, 119.43)    0.12                40
 03/30/2015   00:24:44   (  78.82,  66.80) 03/30/2015   00:24:31  (  78.83,  66.92)    2.79                13
 03/30/2015   01:14:06   ( -79.04,-124.27) 03/30/2015   01:15:11  ( -79.04,-124.37)    2.10                65
 04/01/2015   15:51:52   ( -78.51,  13.33) 04/01/2015   15:50:47  ( -78.51,  13.41)    1.81                65
 04/01/2015   16:41:10   (  78.82,-177.34) 04/01/2015   16:41:23  (  78.82,-177.41)    1.47                13
 04/04/2015   08:08:14   ( -78.64, 129.93) 04/04/2015   08:07:35  ( -78.64, 129.97)    1.01                39
 04/04/2015   08:57:31   (  78.98, -60.47) 04/04/2015   08:58:10  (  78.98, -60.56)    1.89                39
 04/07/2015   00:24:36   ( -78.70,-113.85) 04/07/2015   00:24:24  ( -78.69,-113.95)    2.16                12