Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 9 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)
 09/13/2016   10:35:15   (  79.07, -84.92) 09/13/2016   10:34:21  (  79.07, -84.92)    0.06                54
 09/13/2016   11:24:34   ( -79.39,  84.75) 09/13/2016   11:24:57  ( -79.39,  84.79)    0.80                23
 09/16/2016   02:51:40   (  79.21,  31.84) 09/16/2016   02:51:10  (  79.21,  31.90)    1.34                30
 09/16/2016   03:41:00   ( -79.49,-158.69) 09/16/2016   03:41:47  ( -79.49,-158.59)    2.03                47
 09/18/2016   19:08:09   (  79.19, 147.56) 09/18/2016   19:08:04  (  79.18, 147.43)    2.90                 5
 09/18/2016   19:57:28   ( -79.51, -42.70) 09/18/2016   19:58:40  ( -79.50, -42.80)    2.28                72
 09/21/2016   10:35:13   ( -79.09,  95.18) 09/21/2016   10:34:14  ( -79.09,  95.26)    1.96                59
 09/21/2016   11:24:32   (  79.35, -95.50) 09/21/2016   11:24:51  (  79.35, -95.50)    0.07                19
 09/24/2016   02:51:40   ( -79.13,-148.69) 09/24/2016   02:51:06  ( -79.12,-148.72)    0.74                34