Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 30.  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)
 01/01/2018   03:41:45   (  79.67,  22.74) 01/01/2018   03:41:41  (  79.67,  22.64)    2.21                 4
 01/01/2018   04:31:05   ( -79.92,-167.68) 01/01/2018   04:32:18  ( -79.93,-167.61)    1.54                73
 01/03/2018   19:08:52   ( -79.58, -29.67) 01/03/2018   19:07:53  ( -79.58, -29.62)    1.07                59
 01/03/2018   19:58:12   (  79.81, 139.63) 01/03/2018   19:58:30  (  79.81, 139.76)    2.76                18
 01/06/2018   11:25:21   ( -79.64,  86.63) 01/06/2018   11:24:45  ( -79.64,  86.63)    0.25                36
 01/06/2018   12:14:41   (  79.86,-104.07) 01/06/2018   12:15:22  (  79.87,-103.97)    2.00                41
 01/09/2018   03:41:49   ( -79.69,-157.10) 01/09/2018   03:41:36  ( -79.69,-157.12)    0.38                13
 01/09/2018   04:31:08   (  79.94,  12.49) 01/09/2018   04:32:12  (  79.95,  12.58)    1.94                64
 01/11/2018   19:08:58   (  79.47, 149.56) 01/11/2018   19:07:51  (  79.47, 149.43)    2.76                67