Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 2 22.  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)
 02/23/2018   12:14:54   (  79.84,-104.09) 02/23/2018   12:14:48  (  79.85,-103.94)    3.12                 6
 02/23/2018   13:04:16   ( -80.03,  65.05) 02/23/2018   13:05:27  ( -80.03,  65.20)    2.96                71
 02/26/2018   03:42:02   ( -79.70,-156.93) 02/26/2018   03:41:01  ( -79.71,-156.80)    2.65                61
 02/26/2018   04:31:23   (  79.87,  12.02) 02/26/2018   04:31:40  (  79.88,  12.10)    1.72                17
 02/28/2018   19:58:30   ( -79.76, -40.56) 02/28/2018   19:57:52  ( -79.77, -40.48)    1.75                38
 02/28/2018   20:47:51   (  79.93, 128.39) 02/28/2018   20:48:31  (  79.93, 128.43)    0.74                40
 03/03/2018   12:14:57   ( -79.82,  75.77) 03/03/2018   12:14:42  ( -79.82,  75.84)    1.34                15
 03/03/2018   13:04:18   (  79.99,-115.27) 03/03/2018   13:05:21  (  79.99,-115.26)    0.25                63
 03/06/2018   03:42:03   (  79.68,  22.91) 03/06/2018   03:40:54  (  79.68,  22.97)    1.24                69