Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 9 13.  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)
 09/14/2018   02:52:11   ( -79.15,-148.59) 09/14/2018   02:51:22  ( -79.16,-148.46)    2.88                49
 09/14/2018   03:41:32   (  79.35,  20.31) 09/14/2018   03:42:01  (  79.34,  20.24)    1.46                29
 09/16/2018   19:08:36   ( -79.24, -32.14) 09/16/2018   19:08:15  ( -79.25, -32.03)    2.39                21
 09/16/2018   19:57:57   (  79.43, 136.76) 09/16/2018   19:58:54  (  79.43, 136.69)    1.48                57
 09/19/2018   10:35:44   (  78.96, -85.61) 09/19/2018   10:34:34  (  78.96, -85.64)    0.55                70
 09/19/2018   11:25:02   ( -79.32,  84.29) 09/19/2018   11:25:09  ( -79.33,  84.39)    2.17                 7
 09/22/2018   02:52:09   (  79.08,  31.00) 09/22/2018   02:51:27  (  79.08,  30.99)    0.20                42
 09/22/2018   03:41:28   ( -79.41,-159.29) 09/22/2018   03:42:03  ( -79.41,-159.19)    2.25                35
 09/24/2018   19:08:34   (  79.20, 147.60) 09/24/2018   19:08:20  (  79.20, 147.63)    0.67                14
 09/24/2018   19:57:53   ( -79.52, -42.63) 09/24/2018   19:58:56  ( -79.53, -42.50)    2.61                63
 09/27/2018   10:35:42   ( -78.93,  94.21) 09/27/2018   10:34:39  ( -78.92,  94.10)    2.46                63