Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 10.  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)
 04/12/2017   03:41:42   ( -79.46,-158.97) 04/12/2017   03:41:16  ( -79.47,-158.83)    2.88                26
 04/12/2017   04:31:04   (  79.61,   9.70) 04/12/2017   04:31:56  (  79.61,   9.64)    1.21                52
 04/14/2017   19:09:59   (  76.09, 133.95) 04/14/2017   19:08:46  (  76.27, 132.74)   37.56                73
 04/14/2017   19:58:09   ( -79.50, -42.82) 04/14/2017   19:58:11  ( -79.50, -42.79)    0.63                 2
 04/17/2017   11:25:13   (  79.37, -95.44) 04/17/2017   11:24:25  (  79.37, -95.35)    2.07                48
 04/17/2017   12:14:35   ( -79.57,  73.56) 04/17/2017   12:15:05  ( -79.57,  73.52)    0.91                30
 04/20/2017   03:41:38   (  79.44,  20.88) 04/20/2017   03:41:18  (  79.44,  20.94)    1.29                20
 04/20/2017   04:31:00   ( -79.63,-170.10) 04/20/2017   04:31:58  ( -79.63,-170.17)    1.67                58
 04/22/2017   19:08:46   ( -79.20, -32.45) 04/22/2017   19:07:37  ( -79.19, -32.50)    1.19                69