Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 17.  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)
 04/20/2017   03:41:38   (  79.43,  20.85) 04/20/2017   03:41:18  (  79.44,  20.91)    1.19                20
 04/20/2017   04:31:00   ( -79.62,-170.17) 04/20/2017   04:31:58  ( -79.62,-170.24)    1.55                58
 04/22/2017   19:08:45   ( -79.22, -32.28) 04/22/2017   19:07:36  ( -79.22, -32.32)    0.90                69
 04/22/2017   19:58:03   (  79.52, 137.37) 04/22/2017   19:58:11  (  79.53, 137.44)    1.40                 8
 04/25/2017   11:25:10   ( -79.31,  84.18) 04/25/2017   11:24:29  ( -79.31,  84.17)    0.27                41
 04/25/2017   12:14:28   (  79.61,-106.14) 04/25/2017   12:15:04  (  79.62,-106.03)    2.51                36
 04/28/2017   03:41:33   ( -79.47,-158.89) 04/28/2017   03:41:20  ( -79.47,-158.81)    1.80                13
 04/28/2017   04:30:54   (  79.65,  10.03) 04/28/2017   04:31:59  (  79.64,   9.94)    1.97                65
 04/30/2017   19:08:37   (  79.26, 147.99) 04/30/2017   19:07:35  (  79.27, 148.05)    1.29                62