Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 1 22.  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)
 01/24/2017   19:08:18   (  79.62, 150.64) 01/24/2017   19:08:00  (  79.62, 150.69)    1.18                18
 01/24/2017   19:57:39   ( -79.84, -40.05) 01/24/2017   19:58:38  ( -79.84, -39.98)    1.61                59
 01/27/2017   10:35:29   ( -79.37,  97.15) 01/27/2017   10:34:16  ( -79.36,  97.04)    2.35                73
 01/27/2017   11:24:46   (  79.71, -92.84) 01/27/2017   11:24:50  (  79.71, -92.73)    2.31                 4
 01/30/2017   02:51:57   ( -79.50,-146.11) 01/30/2017   02:51:06  ( -79.49,-146.15)    0.84                51
 01/30/2017   03:41:17   (  79.72,  23.11) 01/30/2017   03:41:44  (  79.71,  23.00)    2.40                27
 02/01/2017   19:08:25   ( -79.62, -29.39) 02/01/2017   19:07:56  ( -79.62, -29.32)    1.34                29
 02/01/2017   19:57:46   (  79.79, 139.57) 02/01/2017   19:58:35  (  79.79, 139.57)    0.19                49
 02/04/2017   11:24:56   ( -79.62,  86.50) 02/04/2017   11:24:50  ( -79.61,  86.39)    2.28                 6