Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 4 22.  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)
 04/22/2016   10:35:59   (  79.11, -84.78) 04/22/2016   10:35:04  (  79.11, -84.79)    0.16                55
 04/22/2016   11:25:17   ( -79.47,  85.17) 04/22/2016   11:25:39  ( -79.47,  85.27)    2.08                22
 04/25/2016   02:52:21   (  79.26,  32.09) 04/25/2016   02:51:54  (  79.28,  32.20)    2.64                27
 04/25/2016   03:41:43   ( -79.47,-158.94) 04/25/2016   03:42:34  ( -79.46,-159.02)    1.76                51
 04/27/2016   18:20:33   ( -76.11, -33.63) 04/27/2016   18:19:19  ( -76.29, -34.58)   32.24                74
 04/27/2016   19:08:46   (  79.33, 148.41) 04/27/2016   19:08:48  (  79.33, 148.41)    0.10                 2
 04/30/2016   10:35:51   ( -79.17,  95.61) 04/30/2016   10:35:04  ( -79.17,  95.64)    0.66                47
 04/30/2016   11:25:11   (  79.39, -95.32) 04/30/2016   11:25:42  (  79.39, -95.39)    1.46                31
 05/03/2016   02:52:15   ( -79.26,-147.93) 05/03/2016   02:51:57  ( -79.26,-147.93)    0.12                18
 05/03/2016   03:41:34   (  79.51,  21.41) 05/03/2016   03:42:34  (  79.51,  21.33)    1.92                60
 05/05/2016   18:19:18   (  79.05, 159.00) 05/05/2016   18:18:12  (  79.04, 158.96)    0.82                66