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   11:25:43   ( -79.36,  84.58) 04/12/2018   11:24:31  ( -79.36,  84.49)    1.84                72
 04/12/2018   12:15:02   (  79.63,-105.93) 04/12/2018   12:15:07  (  79.63,-105.96)    0.83                 5
 04/15/2018   03:42:08   ( -79.51,-158.53) 04/15/2018   03:41:22  ( -79.52,-158.41)    2.43                46
 04/15/2018   04:31:30   (  79.66,  10.20) 04/15/2018   04:32:02  (  79.66,  10.05)    3.04                32
 04/17/2018   19:58:35   ( -79.58, -42.17) 04/17/2018   19:58:16  ( -79.58, -42.13)    0.91                19
 04/17/2018   20:47:55   (  79.80, 127.11) 04/17/2018   20:48:53  (  79.81, 127.19)    1.83                58
 04/20/2018   11:25:40   (  79.41, -95.09) 04/20/2018   11:24:30  (  79.42, -95.03)    1.36                70
 04/20/2018   12:15:01   ( -79.64,  74.15) 04/20/2018   12:15:09  ( -79.64,  74.15)    0.04                 8
 04/23/2018   03:42:06   (  79.51,  21.43) 04/23/2018   03:41:23  (  79.51,  21.48)    0.94                43
 04/23/2018   04:31:28   ( -79.70,-169.56) 04/23/2018   04:32:03  ( -79.70,-169.58)    0.40                35
 04/25/2018   19:58:32   (  79.59, 137.94) 04/25/2018   19:58:16  (  79.60, 137.99)    1.17                16