Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 7 25.  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)
 07/27/2016   10:35:18   (  79.22, -84.02) 07/27/2016   10:34:46  (  79.23, -83.89)    2.98                32
 07/27/2016   11:24:39   ( -79.46,  85.21) 07/27/2016   11:25:25  ( -79.46,  85.21)    0.15                46
 07/30/2016   02:51:43   (  79.26,  32.14) 07/30/2016   02:51:38  (  79.26,  32.14)    0.27                 5
 07/30/2016   03:41:04   ( -79.50,-158.60) 07/30/2016   03:42:17  ( -79.49,-158.74)    2.99                73
 08/01/2016   18:18:48   ( -79.12, -20.53) 08/01/2016   18:17:52  ( -79.12, -20.43)    2.22                56
 08/01/2016   19:08:08   (  79.34, 148.51) 08/01/2016   19:08:30  (  79.33, 148.42)    1.89                22
 08/04/2016   10:35:13   ( -79.19,  95.80) 08/04/2016   10:34:44  ( -79.19,  95.84)    0.84                29
 08/04/2016   11:24:33   (  79.40, -95.15) 08/04/2016   11:25:22  (  79.40, -95.29)    3.11                49
 08/07/2016   02:51:37   ( -79.29,-147.65) 08/07/2016   02:51:35  ( -79.29,-147.64)    0.24                 2