Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 8 10.  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)
 08/12/2017   19:08:17   ( -79.25, -31.99) 08/12/2017   19:07:51  ( -79.26, -31.94)    1.06                26
 08/12/2017   19:57:37   (  79.48, 137.15) 08/12/2017   19:58:29  (  79.47, 137.02)    3.04                52
 08/15/2017   10:36:01   (  77.42, -93.01) 08/15/2017   10:34:47  (  77.55, -93.53)   19.26                74
 08/15/2017   11:24:43   ( -79.35,  84.50) 08/15/2017   11:24:46  ( -79.34,  84.48)    0.56                 3
 08/18/2017   02:51:48   (  79.19,  31.75) 08/18/2017   02:51:02  (  79.20,  31.80)    1.13                46
 08/18/2017   03:41:10   ( -79.40,-159.28) 08/18/2017   03:41:42  ( -79.39,-159.36)    1.71                32
 08/20/2017   19:08:14   (  79.28, 148.17) 08/20/2017   19:07:57  (  79.28, 148.19)    0.36                17
 08/20/2017   19:57:36   ( -79.48, -42.83) 08/20/2017   19:58:37  ( -79.48, -42.94)    2.42                61
 08/23/2017   10:35:22   ( -79.02,  94.79) 08/23/2017   10:34:17  ( -79.01,  94.69)    2.18                65