Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 8 3.  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)
 08/04/2017   19:08:20   (  79.17, 147.48) 08/04/2017   19:07:46  (  79.17, 147.39)    1.99                34
 08/04/2017   19:57:38   ( -79.53, -42.52) 08/04/2017   19:58:21  ( -79.53, -42.46)    1.20                43
 08/07/2017   11:24:44   (  79.36, -95.45) 08/07/2017   11:24:38  (  79.36, -95.40)    1.17                 6
 08/07/2017   12:14:06   ( -79.56,  73.56) 08/07/2017   12:15:18  ( -79.55,  73.48)    1.95                72
 08/10/2017   02:51:51   ( -79.20,-148.24) 08/10/2017   02:50:56  ( -79.20,-148.14)    2.16                55
 08/10/2017   03:41:12   (  79.38,  20.59) 08/10/2017   03:41:35  (  79.38,  20.51)    1.76                23
 08/12/2017   19:08:19   ( -79.22, -32.21) 08/12/2017   19:07:53  ( -79.22, -32.23)    0.48                26
 08/12/2017   19:57:36   (  79.55, 137.66) 08/12/2017   19:58:27  (  79.56, 137.76)    2.07                51
 08/15/2017   10:36:14   (  76.82, -95.31) 08/15/2017   10:35:00  (  76.99, -96.02)   25.80                74