Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 4 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)
 04/19/2016   19:08:54   ( -79.31, -31.67) 04/19/2016   19:08:48  ( -79.31, -31.78)    2.35                 6
 04/19/2016   19:58:11   (  79.65, 138.29) 04/19/2016   19:59:22  (  79.65, 138.34)    1.12                71
 04/22/2016   10:35:56   (  79.21, -84.08) 04/22/2016   10:35:01  (  79.22, -84.02)    1.35                55
 04/22/2016   11:25:18   ( -79.41,  84.89) 04/22/2016   11:25:41  ( -79.41,  84.75)    2.86                23
 04/25/2016   02:52:18   (  79.34,  32.64) 04/25/2016   02:51:52  (  79.35,  32.75)    2.55                26
 04/25/2016   03:41:40   ( -79.54,-158.36) 04/25/2016   03:42:32  ( -79.53,-158.44)    1.85                52
 04/27/2016   18:19:24   ( -79.12, -20.52) 04/27/2016   18:18:10  ( -79.12, -20.47)    1.16                74
 04/27/2016   19:08:43   (  79.38, 148.79) 04/27/2016   19:08:47  (  79.38, 148.74)    1.12                 4
 04/30/2016   10:35:48   ( -79.19,  95.81) 04/30/2016   10:35:04  ( -79.19,  95.75)    1.31                44
 04/30/2016   11:25:04   (  79.56, -94.08) 04/30/2016   11:25:37  (  79.57, -93.93)    3.13                33