Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 9 18.  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)
 09/19/2018   10:35:43   (  78.99, -85.39) 09/19/2018   10:34:33  (  78.99, -85.41)    0.44                70
 09/19/2018   11:25:02   ( -79.31,  84.24) 09/19/2018   11:25:09  ( -79.32,  84.34)    2.46                 7
 09/22/2018   02:52:08   (  79.11,  31.21) 09/22/2018   02:51:26  (  79.11,  31.22)    0.36                42
 09/22/2018   03:41:27   ( -79.43,-159.10) 09/22/2018   03:42:02  ( -79.44,-158.97)    2.77                35
 09/24/2018   19:08:33   (  79.23, 147.80) 09/24/2018   19:08:19  (  79.23, 147.86)    1.43                14
 09/24/2018   19:57:55   ( -79.43, -43.23) 09/24/2018   19:58:59  ( -79.42, -43.36)    2.91                64
 09/27/2018   10:35:42   ( -78.95,  94.36) 09/27/2018   10:34:39  ( -78.95,  94.31)    1.15                63
 09/27/2018   11:24:58   (  79.34, -95.62) 09/27/2018   11:25:12  (  79.35, -95.49)    2.94                14
 09/30/2018   02:52:05   ( -79.10,-148.86) 09/30/2018   02:51:30  ( -79.10,-148.85)    0.29                35
 09/30/2018   03:41:24   (  79.36,  20.43) 09/30/2018   03:42:07  (  79.36,  20.36)    1.59                43
 10/02/2018   19:08:29   ( -79.25, -32.08) 10/02/2018   19:08:22  ( -79.25, -31.99)    2.07                 7