Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 5 21.  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)
 05/21/2014   23:35:57   (  76.75,  69.64) 05/21/2014   23:35:03  (  76.76,  69.67)    0.97                54
 05/22/2014   00:25:09   ( -77.47,-120.02) 05/22/2014   00:25:32  ( -77.47,-119.97)    1.26                23
 05/24/2014   15:52:21   (  77.00,-173.58) 05/24/2014   15:51:56  (  77.01,-173.52)    1.83                25
 05/24/2014   16:41:34   ( -77.66,  -3.32) 05/24/2014   16:42:26  ( -77.67,  -3.23)    2.38                52
 05/27/2014   07:19:39   ( -76.29, 132.20) 05/27/2014   07:18:27  ( -76.28, 132.12)    2.40                72
 05/27/2014   08:08:46   (  77.17, -57.06) 05/27/2014   08:08:51  (  77.17, -57.05)    0.21                 5
 05/29/2014   23:35:59   ( -76.68,-110.63) 05/29/2014   23:35:17  ( -76.68,-110.64)    0.39                42
 05/30/2014   00:25:08   (  77.45,  59.91) 05/30/2014   00:25:43  (  77.46,  59.99)    2.33                35
 06/01/2014   15:52:21   ( -76.89,   5.99) 06/01/2014   15:52:10  ( -76.88,   5.96)    0.76                11
 06/01/2014   16:41:30   (  77.65, 176.61) 06/01/2014   16:42:36  (  77.65, 176.68)    1.98                66
 06/04/2014   07:19:28   (  76.51, -47.08) 06/04/2014   07:18:31  (  76.51, -47.02)    1.45                57