Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 7 25.  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)
 07/27/2017   19:08:22   ( -79.18, -32.49) 07/27/2017   19:07:40  ( -79.18, -32.51)    0.48                42
 07/27/2017   19:57:39   (  79.51, 137.37) 07/27/2017   19:58:14  (  79.52, 137.50)    2.93                35
 07/30/2017   11:24:46   ( -79.33,  84.40) 07/30/2017   11:24:32  ( -79.34,  84.48)    1.72                14
 07/30/2017   12:14:06   (  79.55,-106.49) 07/30/2017   12:15:10  (  79.54,-106.55)    1.42                64
 08/02/2017   02:51:52   (  79.16,  31.51) 08/02/2017   02:50:49  (  79.16,  31.58)    1.57                63
 08/02/2017   03:41:14   ( -79.37,-159.48) 08/02/2017   03:41:29  ( -79.36,-159.57)    2.12                15
 08/04/2017   19:08:20   (  79.19, 147.59) 08/04/2017   19:07:46  (  79.18, 147.50)    2.05                34
 08/04/2017   19:57:39   ( -79.52, -42.60) 08/04/2017   19:58:22  ( -79.52, -42.56)    0.84                43
 08/07/2017   11:24:45   (  79.33, -95.59) 08/07/2017   11:24:39  (  79.34, -95.55)    1.13                 6