Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 2 15.  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)
 02/18/2018   03:41:59   (  79.67,  22.81) 02/18/2018   03:41:08  (  79.67,  22.83)    0.52                51
 02/18/2018   04:31:21   ( -79.86,-168.08) 02/18/2018   04:31:47  ( -79.86,-168.08)    0.33                26
 02/20/2018   19:58:29   (  79.68, 138.76) 02/20/2018   19:58:01  (  79.67, 138.61)    3.03                28
 02/20/2018   20:47:48   ( -79.98, -51.26) 02/20/2018   20:48:36  ( -79.98, -51.11)    3.03                48
 02/23/2018   12:14:56   (  79.80,-104.46) 02/23/2018   12:14:50  (  79.79,-104.48)    0.40                 6
 02/23/2018   13:04:18   ( -79.99,  64.72) 02/23/2018   13:05:29  ( -79.98,  64.69)    0.74                71
 02/26/2018   03:42:03   ( -79.71,-156.86) 02/26/2018   03:41:01  ( -79.72,-156.72)    2.91                62
 02/26/2018   04:31:24   (  79.88,  12.06) 02/26/2018   04:31:40  (  79.88,  12.15)    2.02                16
 02/28/2018   19:58:33   ( -79.69, -41.17) 02/28/2018   19:57:54  ( -79.68, -41.23)    1.28                39