Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 4 26.  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)
 04/28/2018   11:25:38   ( -79.38,  84.63) 04/28/2018   11:24:34  ( -79.38,  84.66)    0.76                64
 04/28/2018   12:14:58   (  79.61,-106.13) 04/28/2018   12:15:11  (  79.62,-106.06)    1.53                13
 05/01/2018   03:42:05   ( -79.40,-159.33) 05/01/2018   03:41:29  ( -79.40,-159.39)    1.27                36
 05/01/2018   04:31:24   (  79.67,  10.18) 05/01/2018   04:32:05  (  79.67,  10.17)    0.22                41
 05/03/2018   19:58:30   ( -79.46, -43.06) 05/03/2018   19:58:22  ( -79.45, -43.19)    2.75                 8
 05/03/2018   20:47:49   (  79.72, 126.46) 05/03/2018   20:48:58  (  79.72, 126.39)    1.43                69
 05/06/2018   11:25:34   (  79.32, -95.76) 05/06/2018   11:24:36  (  79.31, -95.84)    1.75                58
 05/06/2018   12:14:53   ( -79.62,  73.99) 05/06/2018   12:15:12  ( -79.63,  74.11)    2.70                19
 05/09/2018   03:41:59   (  79.40,  20.69) 05/09/2018   03:41:29  (  79.40,  20.60)    2.01                30