Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 5 4.  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)
 05/05/2016   18:19:21   (  79.02, 158.86) 05/05/2016   18:18:14  (  79.02, 158.77)    2.07                67
 05/05/2016   19:08:40   ( -79.35, -31.47) 05/05/2016   19:08:50  ( -79.34, -31.52)    1.24                10
 05/08/2016   10:35:45   (  79.17, -84.34) 05/08/2016   10:35:04  (  79.18, -84.32)    0.48                41
 05/08/2016   11:25:05   ( -79.46,  85.13) 05/08/2016   11:25:41  ( -79.46,  85.18)    1.23                36
 05/11/2016   02:52:12   (  79.24,  31.92) 05/11/2016   02:51:58  (  79.23,  31.83)    2.03                14
 05/11/2016   03:41:32   ( -79.52,-158.58) 05/11/2016   03:42:35  ( -79.51,-158.64)    1.39                63
 05/13/2016   18:19:20   ( -79.02, -21.16) 05/13/2016   18:18:15  ( -79.02, -21.24)    1.75                65
 05/13/2016   19:08:35   (  79.44, 149.15) 05/13/2016   19:08:47  (  79.45, 149.30)    3.16                12
 05/16/2016   10:35:45   ( -79.14,  95.47) 05/16/2016   10:35:07  ( -79.14,  95.39)    1.82                38