Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 6 19.  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)
 06/20/2015   16:41:11   (  78.37, 179.97) 06/20/2015   16:40:35  (  78.36, 179.85)    2.78                36
 06/20/2015   17:30:27   ( -78.84,  -9.88) 06/20/2015   17:31:08  ( -78.84,  -9.92)    0.87                41
 06/23/2015   08:57:35   (  78.62, -62.88) 06/23/2015   08:57:22  (  78.62, -62.84)    1.08                13
 06/23/2015   09:46:55   ( -78.92, 106.44) 06/23/2015   09:48:00  ( -78.91, 106.30)    3.00                65
 06/26/2015   00:24:47   ( -78.27,-116.44) 06/26/2015   00:23:41  ( -78.26,-116.47)    0.65                66
 06/26/2015   01:14:01   (  78.76,  53.77) 06/26/2015   01:14:12  (  78.76,  53.81)    0.92                11
 06/28/2015   16:41:10   ( -78.48,   0.51) 06/28/2015   16:40:28  ( -78.49,   0.57)    1.44                42
 06/28/2015   17:30:24   (  78.97, 170.81) 06/28/2015   17:30:59  (  78.97, 170.95)    3.02                35
 07/01/2015   08:57:36   ( -78.59, 116.97) 07/01/2015   08:57:19  ( -78.59, 116.95)    0.50                17