Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 8 9.  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)
 08/10/2017   02:51:51   ( -79.19,-148.28) 08/10/2017   02:50:56  ( -79.20,-148.15)    3.07                55
 08/10/2017   03:41:11   (  79.42,  20.84) 08/10/2017   03:41:34  (  79.41,  20.80)    1.01                23
 08/12/2017   19:08:18   ( -79.25, -32.03) 08/12/2017   19:07:52  ( -79.25, -31.98)    1.02                26
 08/12/2017   19:57:38   (  79.47, 137.10) 08/12/2017   19:58:30  (  79.46, 136.97)    3.06                52
 08/15/2017   10:36:01   (  77.41, -93.05) 08/15/2017   10:34:47  (  77.55, -93.57)   19.34                74
 08/15/2017   11:24:43   ( -79.34,  84.47) 08/15/2017   11:24:46  ( -79.34,  84.43)    0.72                 3
 08/18/2017   02:51:48   (  79.19,  31.71) 08/18/2017   02:51:02  (  79.19,  31.75)    0.80                46
 08/18/2017   03:41:10   ( -79.39,-159.32) 08/18/2017   03:41:42  ( -79.39,-159.41)    2.06                32
 08/20/2017   19:08:14   (  79.27, 148.14) 08/20/2017   19:07:57  (  79.27, 148.13)    0.24                17
 08/20/2017   19:57:36   ( -79.48, -42.86) 08/20/2017   19:58:37  ( -79.47, -43.00)    3.01                61
 08/23/2017   10:35:23   ( -79.01,  94.76) 08/23/2017   10:34:18  ( -79.00,  94.63)    3.06                65