Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 5 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)
 05/24/2016   10:35:37   (  79.23, -84.00) 05/24/2016   10:35:03  (  79.23, -83.95)    1.16                34
 05/24/2016   11:24:57   ( -79.50,  85.45) 05/24/2016   11:25:40  ( -79.51,  85.55)    2.02                43
 05/27/2016   02:52:03   (  79.27,  32.15) 05/27/2016   02:51:57  (  79.27,  32.11)    0.91                 6
 05/27/2016   03:41:23   ( -79.54,-158.37) 05/27/2016   03:42:34  ( -79.54,-158.37)    0.18                71
 05/29/2016   18:19:09   ( -79.07, -20.82) 05/29/2016   18:18:13  ( -79.07, -20.83)    0.29                56
 05/29/2016   19:08:27   (  79.38, 148.76) 05/29/2016   19:08:49  (  79.37, 148.68)    1.80                22
 06/01/2016   10:35:31   ( -79.22,  95.97) 06/01/2016   10:35:03  ( -79.22,  95.98)    0.16                28
 06/01/2016   11:24:50   (  79.48, -94.68) 06/01/2016   11:25:40  (  79.47, -94.74)    1.48                50
 06/04/2016   02:05:03   (  71.80,  20.62) 06/04/2016   02:03:50  (  72.11,  18.75)   73.09                73
 06/04/2016   02:51:54   ( -79.35,-147.27) 06/04/2016   02:51:54  ( -79.36,-147.20)    1.53                 0