Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 3 18.  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)
 03/19/2014   01:14:28   (  78.01,  50.19) 03/19/2014   01:13:55  (  78.00,  50.08)    2.75                33
 03/19/2014   02:03:43   ( -78.54,-139.58) 03/19/2014   02:04:27  ( -78.54,-139.59)    0.44                44
 03/21/2014   16:42:55   ( -73.89, -14.68) 03/21/2014   16:41:41  ( -74.06, -15.62)   34.53                74
 03/21/2014   17:30:51   (  78.20, 166.97) 03/21/2014   17:30:53  (  78.20, 166.87)    2.41                 2
 03/24/2014   08:57:55   ( -78.01, 114.33) 03/24/2014   08:57:15  ( -78.01, 114.32)    0.38                40
 03/24/2014   09:47:12   (  78.39, -76.23) 03/24/2014   09:47:50  (  78.38, -76.34)    2.61                38
 03/27/2014   01:14:16   ( -78.20,-128.89) 03/27/2014   01:14:13  ( -78.19,-128.95)    1.62                 3
 03/27/2014   02:02:59   (  79.89,  49.16) 03/27/2014   02:04:13  (  79.76,  49.51)   16.12                74
 03/29/2014   16:41:17   (  78.01, 178.48) 03/29/2014   16:40:34  (  78.02, 178.55)    1.60                43