Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 5 17.  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)
 05/19/2017   11:25:04   (  79.31, -95.84) 05/19/2017   11:24:31  (  79.30, -95.89)    1.26                33
 05/19/2017   12:14:24   ( -79.57,  73.61) 05/19/2017   12:15:08  ( -79.58,  73.64)    0.91                44
 05/22/2017   03:41:31   (  79.38,  20.54) 05/22/2017   03:41:24  (  79.38,  20.49)    1.02                 7
 05/22/2017   04:30:51   ( -79.65,-169.98) 05/22/2017   04:32:01  ( -79.65,-169.94)    0.93                70
 05/24/2017   19:08:37   ( -79.26, -32.02) 05/24/2017   19:07:38  ( -79.27, -31.92)    2.36                59
 05/24/2017   19:57:57   (  79.49, 137.14) 05/24/2017   19:58:16  (  79.49, 137.13)    0.11                19
 05/27/2017   11:25:06   ( -79.25,  83.79) 05/27/2017   11:24:34  ( -79.24,  83.66)    2.81                32
 05/27/2017   12:14:23   (  79.59,-106.28) 05/27/2017   12:15:08  (  79.59,-106.21)    1.46                45
 05/30/2017   03:41:30   ( -79.39,-159.43) 05/30/2017   03:41:24  ( -79.38,-159.47)    0.93                 6