Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 6.  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)
 09/08/2017   10:35:23   ( -79.03,  94.88) 09/08/2017   10:34:29  ( -79.02,  94.75)    2.95                54
 09/08/2017   11:24:40   (  79.38, -95.23) 09/08/2017   11:25:03  (  79.38, -95.25)    0.42                23
 09/11/2017   02:51:45   ( -79.23,-147.98) 09/11/2017   02:51:19  ( -79.23,-147.95)    0.68                26
 09/11/2017   03:41:06   (  79.43,  20.93) 09/11/2017   03:41:58  (  79.42,  20.80)    2.81                52
 09/13/2017   18:19:26   (  77.52, 151.53) 09/13/2017   18:18:12  (  77.64, 151.06)   17.56                74
 09/13/2017   19:08:11   ( -79.31, -31.60) 09/13/2017   19:08:14  ( -79.30, -31.65)    1.09                 3
 09/16/2017   10:35:15   (  79.17, -84.21) 09/16/2017   10:34:29  (  79.18, -84.12)    2.19                46
 09/16/2017   11:24:37   ( -79.38,  84.73) 09/16/2017   11:25:09  ( -79.37,  84.65)    1.84                32
 09/19/2017   02:51:40   (  79.27,  32.30) 09/19/2017   02:51:23  (  79.28,  32.41)    2.64                17