Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 3 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)
 03/19/2015   08:08:27   ( -78.60, 129.70) 03/19/2015   08:07:56  ( -78.60, 129.69)    0.43                31
 03/19/2015   08:57:41   (  79.08, -59.90) 03/19/2015   08:58:27  (  79.09, -59.84)    1.12                46
 03/22/2015   00:24:49   ( -78.79,-113.38) 03/22/2015   00:24:43  ( -78.79,-113.36)    0.52                 6
 03/22/2015   01:14:03   (  79.26,  57.09) 03/22/2015   01:15:14  (  79.26,  57.20)    2.44                71
 03/24/2015   15:51:57   (  78.38,-167.30) 03/24/2015   15:51:00  (  78.37,-167.41)    2.64                57
 03/24/2015   16:41:11   ( -78.94,   3.37) 03/24/2015   16:41:31  ( -78.93,   3.35)    0.64                20
 03/27/2015   08:08:14   (  78.71, -49.67) 03/27/2015   08:07:43  (  78.71, -49.65)    0.42                31
 03/27/2015   08:57:30   ( -79.17, 120.68) 03/27/2015   08:58:16  ( -79.17, 120.79)    2.42                46
 03/30/2015   00:24:32   (  78.91,  67.38) 03/30/2015   00:24:28  (  78.91,  67.44)    1.45                 4
 03/30/2015   01:13:53   ( -79.16,-123.43) 03/30/2015   01:15:07  ( -79.16,-123.56)    2.85                74
 04/01/2015   15:51:39   ( -78.52,  13.51) 04/01/2015   15:50:46  ( -78.51,  13.41)    2.41                53