Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 14.  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)
 12/16/2018   10:35:29   ( -79.38,  97.16) 12/16/2018   10:34:22  ( -79.38,  97.11)    0.91                67
 12/16/2018   11:24:47   (  79.68, -93.07) 12/16/2018   11:24:57  (  79.68, -93.06)    0.32                10
 12/19/2018   02:51:56   ( -79.51,-146.08) 12/19/2018   02:51:13  ( -79.51,-146.09)    0.33                43
 12/19/2018   03:41:16   (  79.73,  23.18) 12/19/2018   03:41:50  (  79.74,  23.22)    0.83                34
 12/21/2018   19:08:24   ( -79.60, -29.57) 12/21/2018   19:08:05  ( -79.60, -29.56)    0.29                19
 12/21/2018   19:57:44   (  79.82, 139.71) 12/21/2018   19:58:42  (  79.82, 139.77)    1.28                58
 12/24/2018   10:35:31   (  79.46, -82.34) 12/24/2018   10:34:18  (  79.47, -82.22)    2.63                73
 12/24/2018   11:24:53   ( -79.65,  86.67) 12/24/2018   11:24:58  ( -79.65,  86.69)    0.55                 5
 12/27/2018   02:51:58   (  79.54,  34.14) 12/27/2018   02:51:09  (  79.55,  34.27)    2.72                49