Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 5 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)
 05/21/2016   18:19:15   (  79.01, 158.81) 05/21/2016   18:18:14  (  79.01, 158.72)    1.84                61
 05/21/2016   19:08:34   ( -79.34, -31.54) 05/21/2016   19:08:50  ( -79.33, -31.60)    1.24                16
 05/24/2016   10:35:37   (  79.22, -84.03) 05/24/2016   10:35:03  (  79.22, -83.97)    1.37                34
 05/24/2016   11:24:57   ( -79.50,  85.45) 05/24/2016   11:25:40  ( -79.51,  85.54)    1.98                43
 05/27/2016   02:52:02   (  79.30,  32.34) 05/27/2016   02:51:56  (  79.29,  32.32)    0.63                 6
 05/27/2016   03:41:23   ( -79.54,-158.41) 05/27/2016   03:42:34  ( -79.54,-158.41)    0.28                71
 05/29/2016   18:19:08   ( -79.10, -20.65) 05/29/2016   18:18:12  ( -79.10, -20.64)    0.15                56
 05/29/2016   19:08:27   (  79.36, 148.66) 05/29/2016   19:08:49  (  79.36, 148.60)    1.28                22
 06/01/2016   10:35:31   ( -79.20,  95.85) 06/01/2016   10:35:03  ( -79.20,  95.87)    0.67                28