Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 6 13.  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   03:41:22   ( -79.45,-158.99) 06/15/2017   03:41:21  ( -79.46,-158.86)    2.85                 1
 06/17/2017   19:08:26   (  79.27, 148.06) 06/17/2017   19:07:35  (  79.27, 148.18)    2.62                51
 06/17/2017   19:57:46   ( -79.55, -42.42) 06/17/2017   19:58:12  ( -79.55, -42.28)    2.99                26
 06/20/2017   11:24:53   (  79.28, -95.96) 06/20/2017   11:24:30  (  79.27, -96.09)    2.95                23
 06/20/2017   12:14:14   ( -79.53,  73.32) 06/20/2017   12:15:08  ( -79.52,  73.19)    2.64                54
 06/23/2017   02:52:03   ( -78.95,-149.75) 06/23/2017   02:50:49  ( -78.97,-149.80)    2.23                74
 06/23/2017   03:41:18   (  79.37,  20.49) 06/23/2017   03:41:22  (  79.36,  20.41)    1.57                 4
 06/25/2017   19:08:23   ( -79.24, -32.11) 06/25/2017   19:07:36  ( -79.24, -32.05)    1.39                47