Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 3 18.  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)
 03/19/2017   03:41:39   (  79.56,  21.86) 03/19/2017   03:41:16  (  79.55,  21.85)    0.39                23
 03/19/2017   04:31:00   ( -79.79,-168.81) 03/19/2017   04:31:54  ( -79.80,-168.70)    2.32                54
 03/21/2017   19:11:14   ( -72.40, -54.78) 03/21/2017   19:10:01  ( -72.73, -56.85)   77.76                73
 03/21/2017   19:58:06   (  79.65, 138.38) 03/21/2017   19:58:06  (  79.65, 138.45)    1.43                 0
 03/24/2017   11:25:14   ( -79.48,  85.44) 03/24/2017   11:24:20  ( -79.48,  85.50)    1.35                54
 03/24/2017   12:14:35   (  79.66,-105.67) 03/24/2017   12:14:59  (  79.65,-105.80)    2.76                24
 03/27/2017   03:41:42   ( -79.49,-158.64) 03/27/2017   03:41:12  ( -79.48,-158.74)    2.24                30
 03/27/2017   04:31:01   (  79.73,  10.79) 03/27/2017   04:31:48  (  79.74,  10.79)    0.29                47
 03/29/2017   19:58:08   ( -79.60, -41.95) 03/29/2017   19:58:01  ( -79.61, -41.90)    1.08                 7
 03/29/2017   20:47:29   (  79.77, 126.95) 03/29/2017   20:48:40  (  79.76, 126.80)    3.22                71
 04/01/2017   11:25:13   (  79.47, -94.65) 04/01/2017   11:24:12  (  79.47, -94.57)    1.58                61