Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 24.  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)
 04/25/2017   11:25:09   ( -79.35,  84.44) 04/25/2017   11:24:28  ( -79.35,  84.47)    0.60                41
 04/25/2017   12:14:28   (  79.62,-106.08) 04/25/2017   12:15:04  (  79.63,-105.95)    2.87                36
 04/28/2017   03:41:34   ( -79.39,-159.43) 04/28/2017   03:41:22  ( -79.38,-159.57)    3.00                12
 04/28/2017   04:30:53   (  79.65,  10.04) 04/28/2017   04:31:58  (  79.65,  10.02)    0.49                65
 04/30/2017   19:08:38   (  79.21, 147.69) 04/30/2017   19:07:37  (  79.21, 147.60)    2.14                61
 04/30/2017   19:57:57   ( -79.53, -42.60) 04/30/2017   19:58:13  ( -79.53, -42.55)    1.17                16
 05/03/2017   11:25:02   (  79.31, -95.83) 05/03/2017   11:24:30  (  79.30, -95.96)    2.89                32
 05/03/2017   12:14:21   ( -79.61,  73.92) 05/03/2017   12:15:06  ( -79.61,  73.94)    0.37                45
 05/06/2017   03:41:26   (  79.39,  20.59) 05/06/2017   03:41:23  (  79.38,  20.48)    2.28                 3
 05/06/2017   04:30:39   ( -79.91,-167.96) 05/06/2017   04:31:53  ( -79.88,-167.87)    3.83                74
 05/08/2017   19:08:27   ( -79.31, -31.66) 05/08/2017   19:07:35  ( -79.32, -31.54)    2.88                52