Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 21.  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)
 01/22/2018   11:25:28   ( -79.61,  86.47) 01/22/2018   11:24:35  ( -79.62,  86.50)    0.54                53
 01/22/2018   12:14:49   (  79.80,-104.51) 01/22/2018   12:15:14  (  79.79,-104.62)    2.29                25
 01/25/2018   03:41:55   ( -79.72,-156.87) 01/25/2018   03:41:25  ( -79.72,-156.77)    2.17                30
 01/25/2018   04:31:16   (  79.90,  12.16) 01/25/2018   04:32:04  (  79.90,  12.15)    0.32                48
 01/27/2018   19:58:25   ( -79.71, -41.07) 01/27/2018   19:58:19  ( -79.70, -41.17)    2.02                 6
 01/27/2018   20:47:43   (  79.99, 128.79) 01/27/2018   20:48:54  (  79.99, 128.91)    2.38                71
 01/30/2018   11:25:30   (  79.61, -93.56) 01/30/2018   11:24:30  (  79.61, -93.55)    0.16                60
 01/30/2018   12:14:51   ( -79.84,  75.80) 01/30/2018   12:15:08  ( -79.84,  75.84)    0.77                17
 02/02/2018   03:41:58   (  79.62,  22.42) 02/02/2018   03:41:22  (  79.62,  22.29)    2.78                36