Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 4 11.  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)
 04/12/2018   11:25:44   ( -79.34,  84.45) 04/12/2018   11:24:32  ( -79.34,  84.36)    2.00                72
 04/12/2018   12:15:03   (  79.61,-106.06) 04/12/2018   12:15:08  (  79.61,-106.11)    0.91                 5
 04/15/2018   03:42:08   ( -79.50,-158.64) 04/15/2018   03:41:22  ( -79.50,-158.55)    2.04                46
 04/15/2018   04:31:27   (  79.76,  10.89) 04/15/2018   04:31:58  (  79.76,  11.03)    3.07                31
 04/17/2018   19:58:35   ( -79.57, -42.28) 04/17/2018   19:58:16  ( -79.57, -42.27)    0.11                19
 04/17/2018   20:47:55   (  79.79, 126.99) 04/17/2018   20:48:53  (  79.79, 127.04)    1.07                58
 04/20/2018   11:25:41   (  79.40, -95.18) 04/20/2018   11:24:31  (  79.40, -95.18)    0.07                70
 04/20/2018   12:15:02   ( -79.63,  74.06) 04/20/2018   12:15:10  ( -79.62,  74.00)    1.39                 8
 04/23/2018   03:42:08   (  79.46,  21.10) 04/23/2018   03:41:25  (  79.46,  21.05)    1.08                43