Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 9 15.  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)
 09/16/2016   02:51:39   (  79.24,  32.02) 09/16/2016   02:51:13  (  79.24,  32.08)    1.27                26
 09/16/2016   03:40:59   ( -79.51,-158.52) 09/16/2016   03:41:50  ( -79.52,-158.45)    1.45                51
 09/18/2016   18:21:49   ( -70.00, -46.31) 09/18/2016   18:20:36  ( -70.34, -48.42)   88.07                73
 09/18/2016   19:08:06   (  79.30, 148.26) 09/18/2016   19:08:06  (  79.30, 148.29)    0.87                 0
 09/18/2016   19:55:09   ( -81.66,   9.13) 09/18/2016   19:56:22  ( -80.98,   8.25)   76.84                73
 09/21/2016   10:35:13   ( -79.12,  95.37) 09/21/2016   10:34:18  ( -79.13,  95.48)    2.69                55
 09/21/2016   11:24:31   (  79.42, -95.03) 09/21/2016   11:24:54  (  79.42, -94.96)    1.55                23
 09/24/2016   02:51:40   ( -79.12,-148.72) 09/24/2016   02:51:06  ( -79.12,-148.80)    1.82                34
 09/24/2016   03:40:59   (  79.38,  20.61) 09/24/2016   03:41:43  (  79.38,  20.47)    3.08                44
 09/26/2016   19:08:05   ( -79.24, -32.11) 09/26/2016   19:07:48  ( -79.24, -32.06)    1.14                17