Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 12 20.  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)
 12/21/2014   06:29:41   (  77.30, -31.69) 12/21/2014   06:29:00  (  77.30, -31.75)    1.43                41
 12/21/2014   07:18:54   ( -77.95, 138.69) 12/21/2014   07:19:30  ( -77.94, 138.58)    2.82                36
 12/23/2014   22:46:04   (  77.61,  85.44) 12/23/2014   22:45:44  (  77.60,  85.42)    0.60                20
 12/23/2014   23:35:18   ( -78.20,-104.26) 12/23/2014   23:36:15  ( -78.19,-104.33)    1.60                57
 12/26/2014   14:13:56   ( -75.24,  25.69) 12/26/2014   14:12:42  ( -75.31,  25.35)   12.28                74
 12/26/2014   15:02:30   (  77.70,-158.27) 12/26/2014   15:02:33  (  77.69,-158.39)    2.87                 3
 12/26/2014   15:47:37   ( -79.60,  97.70) 12/26/2014   15:48:50  ( -78.94,  94.94)   93.10                73
 12/29/2014   06:29:36   ( -77.47, 149.00) 12/29/2014   06:28:45  ( -77.47, 149.04)    0.92                51
 12/29/2014   07:18:49   (  77.99, -41.09) 12/29/2014   07:19:16  (  77.99, -41.18)    2.21                27
 12/31/2014   22:45:57   ( -77.60, -94.55) 12/31/2014   22:45:32  ( -77.60, -94.61)    1.61                25
 12/31/2014   23:35:05   (  78.38,  76.67) 12/31/2014   23:35:57  (  78.38,  76.73)    1.43                52
 01/03/2015   14:14:03   (  74.18,-156.90) 01/03/2015   14:12:49  (  74.30,-157.41)   20.30                74
 01/03/2015   15:02:13   ( -77.93,  22.79) 01/03/2015   15:02:15  ( -77.92,  22.74)    1.22                 2