Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 1 10.  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)
 01/11/2015   15:02:21   (  77.77,-157.92) 01/11/2015   15:02:02  (  77.76,-158.03)    2.74                19
 01/11/2015   15:51:34   ( -78.38,  12.61) 01/11/2015   15:52:32  ( -78.37,  12.50)    2.75                58
 01/14/2015   06:34:35   ( -61.28, 122.71) 01/14/2015   06:33:23  ( -61.53, 120.95)   97.96                72
 01/14/2015   07:18:46   (  78.12, -40.45) 01/14/2015   07:18:43  (  78.12, -40.42)    0.66                 3
 01/14/2015   08:07:54   ( -78.92, 131.42) 01/14/2015   08:09:08  ( -78.90, 131.50)    2.99                74
 01/16/2015   22:46:04   ( -77.56, -94.70) 01/16/2015   22:45:01  ( -77.56, -94.72)    0.31                63
 01/16/2015   23:35:13   (  78.31,  76.34) 01/16/2015   23:35:27  (  78.31,  76.39)    1.09                14
 01/19/2015   15:02:34   ( -77.64,  21.51) 01/19/2015   15:01:49  ( -77.63,  21.40)    2.87                45
 01/19/2015   15:51:44   (  78.34,-167.63) 01/19/2015   15:52:16  (  78.34,-167.69)    1.52                32
 01/22/2015   07:19:00   ( -77.87, 138.39) 01/22/2015   07:18:33  ( -77.86, 138.29)    2.45                27