Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 5 7.  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)
 05/08/2017   19:08:36   ( -79.26, -31.99) 05/08/2017   19:07:37  ( -79.26, -31.97)    0.28                59
 05/08/2017   19:57:54   (  79.57, 137.75) 05/08/2017   19:58:12  (  79.58, 137.89)    2.81                18
 05/11/2017   11:25:05   ( -79.28,  84.03) 05/11/2017   11:24:32  ( -79.28,  83.93)    2.12                33
 05/11/2017   12:14:23   (  79.59,-106.24) 05/11/2017   12:15:07  (  79.60,-106.21)    0.80                44
 05/14/2017   03:41:30   ( -79.46,-158.96) 05/14/2017   03:41:22  ( -79.46,-158.85)    2.53                 8
 05/14/2017   04:30:51   (  79.64,  10.00) 05/14/2017   04:32:01  (  79.64,   9.97)    0.65                70
 05/16/2017   19:08:37   (  79.23, 147.79) 05/16/2017   19:07:38  (  79.23, 147.76)    0.71                59
 05/16/2017   19:57:57   ( -79.51, -42.74) 05/16/2017   19:58:15  ( -79.51, -42.68)    1.40                18
 05/19/2017   11:25:04   (  79.31, -95.79) 05/19/2017   11:24:31  (  79.31, -95.84)    1.11                33