Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 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)
 01/25/2018   03:41:55   ( -79.73,-156.77) 01/25/2018   03:41:25  ( -79.74,-156.66)    2.22                30
 01/25/2018   04:31:17   (  79.88,  11.99) 01/25/2018   04:32:05  (  79.88,  11.98)    0.29                48
 01/27/2018   19:58:24   ( -79.72, -40.95) 01/27/2018   19:58:18  ( -79.72, -41.05)    1.90                 6
 01/27/2018   20:47:43   (  79.97, 128.63) 01/27/2018   20:48:54  (  79.98, 128.75)    2.47                71
 01/30/2018   11:25:30   (  79.59, -93.70) 01/30/2018   11:24:30  (  79.59, -93.69)    0.37                60
 01/30/2018   12:14:51   ( -79.82,  75.65) 01/30/2018   12:15:08  ( -79.82,  75.69)    1.06                17
 02/02/2018   03:41:58   (  79.64,  22.56) 02/02/2018   03:41:22  (  79.63,  22.45)    2.33                36
 02/02/2018   04:31:19   ( -79.87,-168.06) 02/02/2018   04:32:00  ( -79.86,-168.15)    1.84                41
 02/04/2018   19:58:23   (  79.80, 139.61) 02/04/2018   19:58:10  (  79.80, 139.71)    2.07                13