Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 5.  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)
 04/06/2017   19:58:12   (  79.45, 136.83) 04/06/2017   19:58:09  (  79.45, 136.78)    0.93                 3
 04/06/2017   20:47:17   ( -80.24, -49.32) 04/06/2017   20:48:31  ( -80.17, -49.07)    9.19                74
 04/09/2017   11:25:18   ( -79.31,  84.17) 04/09/2017   11:24:25  ( -79.31,  84.16)    0.48                53
 04/09/2017   12:14:36   (  79.61,-106.16) 04/09/2017   12:15:00  (  79.61,-106.06)    2.04                24
 04/12/2017   03:41:45   ( -79.36,-159.66) 04/12/2017   03:41:20  ( -79.35,-159.79)    3.00                25
 04/12/2017   04:31:04   (  79.61,   9.75) 04/12/2017   04:31:56  (  79.62,   9.72)    0.58                52
 04/14/2017   19:09:51   (  76.49, 135.22) 04/14/2017   19:08:38  (  76.64, 134.12)   33.30                73
 04/14/2017   19:58:08   ( -79.51, -42.76) 04/14/2017   19:58:10  ( -79.52, -42.68)    1.78                 2
 04/17/2017   11:25:15   (  79.25, -96.21) 04/17/2017   11:24:28  (  79.25, -96.31)    2.26                47