Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 6 23.  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)
 06/25/2017   19:08:26   ( -79.23, -32.14) 06/25/2017   19:07:36  ( -79.24, -32.11)    0.70                50
 06/25/2017   19:57:46   (  79.46, 136.96) 06/25/2017   19:58:14  (  79.46, 136.92)    0.81                28
 06/28/2017   11:24:52   ( -79.36,  84.54) 06/28/2017   11:24:27  ( -79.37,  84.66)    2.61                25
 06/28/2017   12:14:12   (  79.57,-106.34) 06/28/2017   12:15:05  (  79.58,-106.28)    1.27                53
 07/01/2017   02:53:56   (  73.57,  11.62) 07/01/2017   02:52:43  (  73.84,   9.93)   60.55                73
 07/01/2017   03:41:20   ( -79.37,-159.53) 07/01/2017   03:41:21  ( -79.36,-159.62)    1.87                 1
 07/03/2017   19:08:26   (  79.19, 147.59) 07/03/2017   19:07:35  (  79.19, 147.57)    0.38                51
 07/03/2017   19:57:46   ( -79.49, -42.84) 07/03/2017   19:58:12  ( -79.48, -42.84)    0.23                26
 07/06/2017   11:24:52   (  79.31, -95.76) 07/06/2017   11:24:26  (  79.32, -95.70)    1.34                26