Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 8 16.  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)
 08/18/2017   02:51:48   (  79.20,  31.82) 08/18/2017   02:51:02  (  79.20,  31.87)    1.04                46
 08/18/2017   03:41:10   ( -79.40,-159.24) 08/18/2017   03:41:42  ( -79.40,-159.32)    1.63                32
 08/20/2017   19:08:13   (  79.29, 148.24) 08/20/2017   19:07:56  (  79.29, 148.26)    0.38                17
 08/20/2017   19:57:35   ( -79.49, -42.79) 08/20/2017   19:58:36  ( -79.48, -42.90)    2.27                61
 08/23/2017   10:35:22   ( -79.02,  94.82) 08/23/2017   10:34:17  ( -79.02,  94.73)    1.93                65
 08/23/2017   11:24:39   (  79.37, -95.36) 08/23/2017   11:24:51  (  79.37, -95.35)    0.23                12
 08/26/2017   02:51:47   ( -79.14,-148.58) 08/26/2017   02:51:11  ( -79.14,-148.66)    1.74                36
 08/26/2017   03:41:04   (  79.48,  21.29) 08/26/2017   03:41:45  (  79.48,  21.32)    0.55                41
 08/28/2017   19:08:11   ( -79.29, -31.74) 08/28/2017   19:08:04  ( -79.29, -31.78)    1.06                 7