Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 10.  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,  33.59) 12/11/2018   02:51:15  (  79.46,  33.52)    1.61                39
 12/11/2018   03:41:13   ( -79.76,-156.63) 12/11/2018   03:41:51  ( -79.77,-156.52)    2.46                38
 12/13/2018   19:08:20   (  79.56, 150.15) 12/13/2018   19:08:07  (  79.56, 150.07)    1.62                13
 12/13/2018   19:57:39   ( -79.85, -40.03) 12/13/2018   19:58:43  ( -79.86, -39.90)    2.64                64
 12/16/2018   10:35:27   ( -79.39,  97.21) 12/16/2018   10:34:23  ( -79.38,  97.10)    2.35                64
 12/16/2018   11:24:45   (  79.65, -93.31) 12/16/2018   11:24:58  (  79.65, -93.37)    1.13                13
 12/19/2018   02:51:52   ( -79.48,-146.30) 12/19/2018   02:51:14  ( -79.48,-146.36)    1.36                38
 12/19/2018   03:41:11   (  79.74,  23.20) 12/19/2018   03:41:50  (  79.74,  23.19)    0.25                39
 12/21/2018   19:08:17   ( -79.60, -29.55) 12/21/2018   19:08:05  ( -79.60, -29.55)    0.19                12