Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 11.  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)
 01/14/2018   11:25:24   (  79.66, -93.21) 01/14/2018   11:24:39  (  79.66, -93.13)    1.63                45
 01/14/2018   12:14:47   ( -79.81,  75.53) 01/14/2018   12:15:20  ( -79.80,  75.42)    2.25                33
 01/17/2018   03:41:51   (  79.74,  23.25) 01/17/2018   03:41:29  (  79.74,  23.36)    2.28                22
 01/17/2018   04:31:14   ( -79.88,-167.98) 01/17/2018   04:32:10  ( -79.88,-168.06)    1.90                56
 01/19/2018   19:10:23   ( -75.91, -46.50) 01/19/2018   19:09:09  ( -76.16, -47.78)   43.77                74
 01/19/2018   19:58:22   (  79.70, 138.86) 01/19/2018   19:58:24  (  79.70, 138.72)    3.00                 2
 01/22/2018   11:25:28   ( -79.63,  86.58) 01/22/2018   11:24:35  ( -79.63,  86.64)    1.28                53
 01/22/2018   12:14:49   (  79.81,-104.45) 01/22/2018   12:15:14  (  79.80,-104.51)    1.41                25
 01/25/2018   03:41:55   ( -79.74,-156.75) 01/25/2018   03:41:25  ( -79.74,-156.61)    2.97                30