Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 4 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)
 04/22/2014   16:41:49   ( -77.50,  -4.03) 04/22/2014   16:41:40  ( -77.49,  -4.11)    2.17                 9
 04/22/2014   17:31:03   (  78.02, 165.87) 04/22/2014   17:32:12  (  78.00, 165.75)    3.04                69
 04/25/2014   08:09:10   (  77.13, -57.29) 04/25/2014   08:08:02  (  77.14, -57.23)    1.64                68
 04/25/2014   08:58:27   ( -77.63, 112.35) 04/25/2014   08:58:36  ( -77.62, 112.29)    1.70                 9
 04/28/2014   00:25:57   (  77.14,  58.55) 04/28/2014   00:25:02  (  77.14,  58.54)    0.22                55
 04/28/2014   01:15:11   ( -77.78,-131.20) 04/28/2014   01:15:32  ( -77.79,-131.12)    2.17                21
 04/30/2014   16:42:48   (  77.21, 174.61) 04/30/2014   16:42:00  (  77.22, 174.66)    1.32                48
 04/30/2014   17:32:07   ( -77.64, -16.06) 04/30/2014   17:32:36  ( -77.62, -16.17)    3.05                29
 05/03/2014   08:59:48   (  77.12, -70.00) 05/03/2014   08:59:02  (  77.12, -70.00)    0.04                46