Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 5 16.  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   (  79.30, -95.89) 05/19/2017   11:24:31  (  79.29, -95.94)    1.23                33
 05/19/2017   12:14:23   ( -79.60,  73.82) 05/19/2017   12:15:07  ( -79.60,  73.87)    0.89                44
 05/22/2017   03:41:31   (  79.37,  20.49) 05/22/2017   03:41:24  (  79.37,  20.43)    1.11                 7
 05/22/2017   04:30:50   ( -79.68,-169.76) 05/22/2017   04:32:00  ( -79.68,-169.71)    0.84                70
 05/24/2017   19:08:37   ( -79.25, -32.06) 05/24/2017   19:07:38  ( -79.26, -31.97)    2.10                59
 05/24/2017   19:57:57   (  79.48, 137.09) 05/24/2017   19:58:16  (  79.48, 137.07)    0.37                19
 05/27/2017   11:25:03   ( -79.36,  84.50) 05/27/2017   11:24:30  ( -79.37,  84.64)    3.06                33
 05/27/2017   12:14:23   (  79.58,-106.33) 05/27/2017   12:15:08  (  79.58,-106.28)    0.94                45
 05/30/2017   03:41:30   ( -79.38,-159.46) 05/30/2017   03:41:24  ( -79.38,-159.54)    1.77                 6