Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 11.  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)
 09/13/2017   18:19:20   (  77.79, 152.68) 09/13/2017   18:18:06  (  77.89, 152.31)   14.58                74
 09/13/2017   19:08:11   ( -79.30, -31.63) 09/13/2017   19:08:14  ( -79.31, -31.63)    0.26                 3
 09/16/2017   10:35:17   (  79.09, -84.73) 09/16/2017   10:34:32  (  79.08, -84.85)    2.62                45
 09/16/2017   11:24:36   ( -79.41,  84.93) 09/16/2017   11:25:08  ( -79.41,  84.92)    0.20                32
 09/19/2017   02:51:41   (  79.22,  31.98) 09/19/2017   02:51:25  (  79.21,  31.91)    1.74                16
 09/19/2017   03:41:01   ( -79.50,-158.55) 09/19/2017   03:42:02  ( -79.50,-158.53)    0.51                61
 09/21/2017   18:18:44   ( -79.12, -20.42) 09/21/2017   18:17:39  ( -79.12, -20.30)    2.56                65
 09/21/2017   19:08:04   (  79.35, 148.67) 09/21/2017   19:08:17  (  79.35, 148.68)    0.15                13
 09/24/2017   10:35:11   ( -79.12,  95.47) 09/24/2017   10:34:36  ( -79.12,  95.41)    1.33                35