Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 2 19.  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)
 02/20/2015   15:51:46   (  78.32,-167.62) 02/20/2015   15:51:32  (  78.32,-167.74)    2.89                14
 02/20/2015   16:40:59   ( -78.91,   3.20) 02/20/2015   16:42:02  ( -78.91,   3.20)    0.12                63
 02/23/2015   07:18:48   ( -78.20, 140.04) 02/23/2015   07:17:44  ( -78.21, 140.12)    1.95                64
 02/23/2015   08:08:01   (  78.74, -49.52) 02/23/2015   08:08:14  (  78.75, -49.39)    3.06                13
 02/25/2015   23:35:09   ( -78.34,-103.39) 02/25/2015   23:34:34  ( -78.34,-103.41)    0.28                35
 02/26/2015   00:24:22   (  78.87,  67.09) 02/26/2015   00:25:04  (  78.87,  67.14)    0.99                42
 02/28/2015   15:51:24   ( -78.64,  14.11) 02/28/2015   15:51:18  ( -78.65,  14.18)    1.82                 6
 02/28/2015   16:40:43   (  78.92,-176.72) 02/28/2015   16:41:55  (  78.91,-176.85)    2.97                72
 03/03/2015   07:18:28   (  78.26, -39.58) 03/03/2015   07:17:35  (  78.26, -39.62)    1.11                53