Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 8 13.  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)
 08/15/2016   02:51:47   (  79.18,  31.63) 08/15/2016   02:51:33  (  79.18,  31.52)    2.40                14
 08/15/2016   03:41:05   ( -79.50,-158.63) 08/15/2016   03:42:08  ( -79.50,-158.63)    0.16                63
 08/17/2016   18:18:52   ( -79.05, -20.94) 08/17/2016   18:17:45  ( -79.05, -20.90)    0.95                67
 08/17/2016   19:08:12   (  79.28, 148.11) 08/17/2016   19:08:23  (  79.27, 148.00)    2.64                11
 08/20/2016   10:35:18   ( -79.14,  95.50) 08/20/2016   10:34:36  ( -79.15,  95.56)    1.50                42
 08/20/2016   11:24:38   (  79.36, -95.44) 08/20/2016   11:25:14  (  79.36, -95.52)    1.79                36
 08/23/2016   02:51:42   ( -79.30,-147.60) 08/23/2016   02:51:25  ( -79.31,-147.46)    3.15                17
 08/23/2016   03:41:02   (  79.52,  21.49) 08/23/2016   03:42:03  (  79.52,  21.51)    0.34                61
 08/25/2016   18:18:51   (  78.96, 158.54) 08/25/2016   18:17:43  (  78.96, 158.46)    1.95                68