Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 7 12.  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)
 07/14/2017   11:24:50   ( -79.28,  84.02) 07/14/2017   11:24:25  ( -79.28,  84.04)    0.38                25
 07/14/2017   12:14:10   (  79.49,-106.89) 07/14/2017   12:15:03  (  79.49,-106.99)    1.99                53
 07/17/2017   02:53:46   (  73.88,  12.31) 07/17/2017   02:52:33  (  74.14,  10.70)   56.89                73
 07/17/2017   03:41:16   ( -79.37,-159.52) 07/17/2017   03:41:17  ( -79.37,-159.52)    0.10                 1
 07/19/2017   19:08:22   (  79.15, 147.37) 07/19/2017   19:07:32  (  79.15, 147.31)    1.45                50
 07/19/2017   19:57:42   ( -79.45, -43.08) 07/19/2017   19:58:09  ( -79.45, -43.08)    0.23                27
 07/22/2017   11:24:47   (  79.27, -96.00) 07/22/2017   11:24:23  (  79.27, -96.04)    1.08                24
 07/22/2017   12:14:07   ( -79.56,  73.60) 07/22/2017   12:15:00  ( -79.56,  73.64)    0.80                53
 07/25/2017   02:52:56   ( -76.29,-161.23) 07/25/2017   02:51:42  ( -76.47,-162.17)   31.90                74