Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 8.  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)
 12/11/2018   02:51:54   (  79.46,  33.53) 12/11/2018   02:51:15  (  79.45,  33.45)    1.63                39
 12/11/2018   03:41:12   ( -79.79,-156.41) 12/11/2018   03:41:50  ( -79.79,-156.29)    2.47                38
 12/13/2018   19:08:20   (  79.55, 150.09) 12/13/2018   19:08:07  (  79.55, 150.01)    1.64                13
 12/13/2018   19:57:39   ( -79.85, -40.08) 12/13/2018   19:58:43  ( -79.85, -39.95)    2.65                64
 12/16/2018   10:35:27   ( -79.38,  97.16) 12/16/2018   10:34:23  ( -79.37,  97.05)    2.38                64
 12/16/2018   11:24:46   (  79.64, -93.37) 12/16/2018   11:24:59  (  79.64, -93.43)    1.20                13
 12/19/2018   02:51:51   ( -79.51,-146.07) 12/19/2018   02:51:13  ( -79.50,-146.14)    1.46                38
 12/19/2018   03:41:11   (  79.73,  23.16) 12/19/2018   03:41:50  (  79.73,  23.14)    0.39                39
 12/21/2018   19:08:17   ( -79.60, -29.58) 12/21/2018   19:08:05  ( -79.60, -29.59)    0.15                12