Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 6 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)
 06/20/2014   07:19:11   (  76.59, -46.75) 06/20/2014   07:18:47  (  76.59, -46.68)    1.98                24
 06/20/2014   08:08:27   ( -77.12, 122.81) 06/20/2014   08:09:21  ( -77.11, 122.74)    1.87                54
 06/22/2014   22:46:21   ( -76.05,-100.25) 06/22/2014   22:45:13  ( -76.05,-100.18)    1.90                68
 06/22/2014   23:35:29   (  76.89,  70.21) 06/22/2014   23:35:38  (  76.90,  70.32)    3.05                 9
 06/25/2014   15:02:41   ( -76.24,  16.26) 06/25/2014   15:02:07  ( -76.24,  16.23)    0.88                34
 06/25/2014   15:51:49   (  77.07,-173.22) 06/25/2014   15:52:32  (  77.07,-173.20)    0.62                43
 06/28/2014   06:32:33   (  66.82, -52.48) 06/28/2014   06:31:20  (  67.00, -53.70)   57.00                73
 06/28/2014   07:18:58   ( -76.50, 133.02) 06/28/2014   07:18:58  ( -76.50, 132.98)    1.02                 0
 06/28/2014   08:05:41   (  81.79, -12.16) 06/28/2014   08:06:54  (  81.25, -11.73)   60.63                73
 06/30/2014   22:46:03   (  76.04,  79.78) 06/30/2014   22:45:20  (  76.03,  79.77)    0.23                43