Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 1.  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)
 09/03/2017   02:51:48   (  79.20,  31.79) 09/03/2017   02:51:14  (  79.20,  31.84)    1.12                34
 09/03/2017   03:41:09   ( -79.43,-159.04) 09/03/2017   03:41:53  ( -79.43,-159.13)    1.81                44
 09/05/2017   19:08:13   (  79.34, 148.56) 09/05/2017   19:08:07  (  79.35, 148.69)    3.07                 6
 09/05/2017   19:57:34   ( -79.57, -42.23) 09/05/2017   19:58:46  ( -79.56, -42.23)    0.24                72
 09/08/2017   10:35:20   ( -79.16,  95.65) 09/08/2017   10:34:25  ( -79.17,  95.79)    3.04                55
 09/08/2017   11:24:40   (  79.39, -95.22) 09/08/2017   11:25:03  (  79.38, -95.24)    0.62                23
 09/11/2017   02:51:46   ( -79.21,-148.15) 09/11/2017   02:51:20  ( -79.21,-148.16)    0.18                26
 09/11/2017   03:41:03   (  79.55,  21.76) 09/11/2017   03:41:54  (  79.55,  21.90)    2.89                51
 09/13/2017   18:19:36   (  77.07, 149.77) 09/13/2017   18:18:22  (  77.22, 149.15)   22.38                74