Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 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)
 01/14/2018   11:25:25   (  79.62, -93.53) 01/14/2018   11:24:40  (  79.62, -93.47)    1.28                45
 01/14/2018   12:14:47   ( -79.80,  75.47) 01/14/2018   12:15:20  ( -79.79,  75.35)    2.57                33
 01/17/2018   03:41:53   (  79.70,  22.95) 01/17/2018   03:41:31  (  79.70,  23.02)    1.45                22
 01/17/2018   04:31:16   ( -79.84,-168.29) 01/17/2018   04:32:12  ( -79.84,-168.43)    2.71                56
 01/19/2018   19:10:35   ( -75.32, -48.22) 01/19/2018   19:09:21  ( -75.59, -49.65)   50.14                74
 01/19/2018   19:58:20   (  79.78, 139.42) 01/19/2018   19:58:21  (  79.78, 139.51)    1.89                 1
 01/22/2018   11:25:29   ( -79.60,  86.34) 01/22/2018   11:24:36  ( -79.59,  86.29)    1.13                53
 01/22/2018   12:14:48   (  79.85,-104.12) 01/22/2018   12:15:12  (  79.86,-104.00)    2.59                24
 01/25/2018   03:41:57   ( -79.68,-157.22) 01/25/2018   03:41:27  ( -79.67,-157.24)    0.54                30
 01/25/2018   04:31:18   (  79.85,  11.76) 01/25/2018   04:32:06  (  79.84,  11.62)    2.90                48
 01/27/2018   19:58:25   ( -79.75, -40.79) 01/27/2018   19:58:18  ( -79.75, -40.78)    0.33                 7