Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 7 16.  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)
 07/17/2017   02:53:44   (  73.98,  12.53) 07/17/2017   02:52:31  (  74.23,  10.93)   55.97                73
 07/17/2017   03:41:15   ( -79.39,-159.33) 07/17/2017   03:41:16  ( -79.39,-159.32)    0.36                 1
 07/19/2017   19:08:21   (  79.18, 147.56) 07/19/2017   19:07:31  (  79.18, 147.53)    0.83                50
 07/19/2017   19:57:41   ( -79.47, -42.91) 07/19/2017   19:58:08  ( -79.48, -42.87)    0.94                27
 07/22/2017   11:24:46   (  79.30, -95.84) 07/22/2017   11:24:22  (  79.30, -95.82)    0.44                24
 07/22/2017   12:14:06   ( -79.58,  73.74) 07/22/2017   12:14:59  ( -79.59,  73.85)    2.35                53
 07/25/2017   02:52:39   ( -77.11,-158.34) 07/25/2017   02:51:25  ( -77.25,-159.04)   23.07                74
 07/25/2017   03:41:11   (  79.40,  20.74) 07/25/2017   03:41:13  (  79.41,  20.84)    2.37                 2
 07/27/2017   19:08:17   ( -79.21, -32.26) 07/27/2017   19:07:28  ( -79.22, -32.18)    1.83                49
 07/27/2017   19:57:37   (  79.42, 136.77) 07/27/2017   19:58:06  (  79.42, 136.70)    1.35                29
 07/30/2017   11:24:43   ( -79.27,  83.98) 07/30/2017   11:24:21  ( -79.26,  83.94)    1.03                22