Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 2 10.  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)
 02/12/2017   11:24:58   (  79.66, -93.19) 02/12/2017   11:24:43  (  79.66, -93.14)    0.88                15
 02/12/2017   12:14:19   ( -79.88,  76.16) 02/12/2017   12:15:21  ( -79.88,  76.22)    1.24                62
 02/15/2017   02:52:07   ( -79.49,-146.14) 02/15/2017   02:50:57  ( -79.50,-146.05)    2.01                70
 02/15/2017   03:41:27   (  79.71,  23.06) 02/15/2017   03:41:35  (  79.71,  23.08)    0.38                 8
 02/17/2017   19:08:34   ( -79.58, -29.65) 02/17/2017   19:07:47  ( -79.58, -29.56)    2.05                47
 02/17/2017   19:57:54   (  79.79, 139.56) 02/17/2017   19:58:25  (  79.79, 139.58)    0.38                31
 02/20/2017   11:25:02   ( -79.66,  86.82) 02/20/2017   11:24:38  ( -79.67,  86.94)    2.71                24
 02/20/2017   12:14:22   (  79.87,-103.96) 02/20/2017   12:15:16  (  79.87,-103.91)    0.98                54
 02/23/2017   03:41:32   ( -79.66,-157.28) 02/23/2017   03:41:32  ( -79.65,-157.40)    2.42                 0