Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 20.  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   ( -79.62,  86.53) 01/22/2018   11:24:35  ( -79.62,  86.56)    0.54                53
 01/22/2018   12:14:49   (  79.81,-104.45) 01/22/2018   12:15:14  (  79.80,-104.56)    2.33                25
 01/25/2018   03:41:55   ( -79.73,-156.81) 01/25/2018   03:41:25  ( -79.73,-156.70)    2.07                30
 01/25/2018   04:31:17   (  79.87,  11.94) 01/25/2018   04:32:05  (  79.87,  11.92)    0.42                48
 01/27/2018   19:58:25   ( -79.72, -40.99) 01/27/2018   19:58:19  ( -79.71, -41.10)    2.27                 6
 01/27/2018   20:47:44   (  79.96, 128.58) 01/27/2018   20:48:55  (  79.97, 128.68)    2.13                71
 01/30/2018   11:25:30   (  79.58, -93.74) 01/30/2018   11:24:30  (  79.58, -93.76)    0.39                60
 01/30/2018   12:14:51   ( -79.81,  75.61) 01/30/2018   12:15:08  ( -79.82,  75.62)    0.37                17
 02/02/2018   03:41:56   (  79.71,  23.06) 02/02/2018   03:41:19  (  79.72,  23.20)    2.98                37