Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 8 21.  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)
 08/23/2017   10:35:26   ( -79.01,  94.73) 08/23/2017   10:34:18  ( -79.00,  94.63)    2.25                68
 08/23/2017   11:24:43   (  79.36, -95.41) 08/23/2017   11:24:52  (  79.36, -95.43)    0.38                 9
 08/26/2017   02:51:48   ( -79.25,-147.88) 08/26/2017   02:51:07  ( -79.26,-147.74)    3.16                41
 08/26/2017   03:41:09   (  79.44,  21.01) 08/26/2017   03:41:46  (  79.44,  20.96)    1.15                37
 08/28/2017   19:08:15   ( -79.33, -31.49) 08/28/2017   19:08:02  ( -79.34, -31.36)    2.80                13
 08/28/2017   19:57:36   (  79.52, 137.41) 08/28/2017   19:58:41  (  79.51, 137.35)    1.31                65
 08/31/2017   10:35:23   (  79.08, -84.82) 08/31/2017   10:34:21  (  79.08, -84.84)    0.30                62
 08/31/2017   11:24:41   ( -79.44,  85.13) 08/31/2017   11:24:56  ( -79.45,  85.28)    3.03                15
 09/03/2017   02:51:49   (  79.19,  31.73) 09/03/2017   02:51:15  (  79.19,  31.76)    0.62                34