Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 6 12.  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)
 06/15/2017   03:41:21   ( -79.47,-158.83) 06/15/2017   03:41:20  ( -79.48,-158.69)    2.88                 1
 06/17/2017   19:08:26   (  79.29, 148.20) 06/17/2017   19:07:35  (  79.30, 148.33)    2.73                51
 06/17/2017   19:57:47   ( -79.53, -42.53) 06/17/2017   19:58:13  ( -79.54, -42.39)    3.07                26
 06/20/2017   11:24:54   (  79.26, -96.07) 06/20/2017   11:24:31  (  79.25, -96.20)    2.80                23
 06/20/2017   12:14:14   ( -79.55,  73.47) 06/20/2017   12:15:08  ( -79.54,  73.36)    2.52                54
 06/23/2017   02:52:01   ( -79.01,-149.37) 06/23/2017   02:50:47  ( -79.02,-149.41)    1.42                74
 06/23/2017   03:41:17   (  79.39,  20.63) 06/23/2017   03:41:21  (  79.38,  20.57)    1.35                 4
 06/25/2017   19:08:22   ( -79.26, -31.98) 06/25/2017   19:07:35  ( -79.26, -31.91)    1.62                47