Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 8.  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)
 04/09/2017   11:25:19   ( -79.29,  84.00) 04/09/2017   11:24:26  ( -79.29,  83.97)    0.60                53
 04/09/2017   12:14:37   (  79.59,-106.32) 04/09/2017   12:15:01  (  79.59,-106.24)    1.74                24
 04/12/2017   03:41:42   ( -79.45,-159.05) 04/12/2017   03:41:16  ( -79.46,-158.92)    2.84                26
 04/12/2017   04:31:03   (  79.63,   9.86) 04/12/2017   04:31:55  (  79.63,   9.81)    1.17                52
 04/14/2017   19:09:58   (  76.12, 134.04) 04/14/2017   19:08:45  (  76.30, 132.84)   37.23                73
 04/14/2017   19:58:09   ( -79.49, -42.90) 04/14/2017   19:58:11  ( -79.49, -42.87)    0.73                 2
 04/17/2017   11:25:13   (  79.36, -95.55) 04/17/2017   11:24:25  (  79.36, -95.44)    2.35                48
 04/17/2017   12:14:35   ( -79.56,  73.46) 04/17/2017   12:15:05  ( -79.56,  73.43)    0.61                30
 04/20/2017   03:41:38   (  79.46,  21.02) 04/20/2017   03:41:18  (  79.46,  21.11)    1.85                20
 04/20/2017   04:31:01   ( -79.62,-170.21) 04/20/2017   04:31:59  ( -79.62,-170.26)    1.13                58
 04/22/2017   19:08:45   ( -79.22, -32.31) 04/22/2017   19:07:36  ( -79.22, -32.33)    0.32                69