Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 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)
 12/13/2017   11:25:01   (  79.67, -93.12) 12/13/2017   11:24:55  (  79.67, -93.13)    0.11                 6
 12/13/2017   12:14:23   ( -79.86,  75.91) 12/13/2017   12:15:35  ( -79.85,  75.78)    2.69                72
 12/16/2017   02:52:12   ( -79.47,-146.31) 12/16/2017   02:51:11  ( -79.47,-146.36)    0.89                61
 12/16/2017   03:41:31   (  79.73,  23.21) 12/16/2017   03:41:47  (  79.74,  23.22)    0.34                16
 12/18/2017   19:08:41   ( -79.57, -29.76) 12/18/2017   19:08:02  ( -79.57, -29.76)    0.24                39
 12/18/2017   19:58:00   (  79.83, 139.79) 12/18/2017   19:58:38  (  79.83, 139.86)    1.35                38
 12/21/2017   11:25:08   ( -79.70,  87.04) 12/21/2017   11:24:51  ( -79.70,  87.13)    1.79                17
 12/21/2017   12:14:28   (  79.91,-103.66) 12/21/2017   12:15:28  (  79.92,-103.50)    3.09                60
 12/24/2017   02:52:18   (  79.48,  33.70) 12/24/2017   02:51:06  (  79.48,  33.71)    0.36                72
 12/24/2017   03:41:40   ( -79.67,-157.28) 12/24/2017   03:41:46  ( -79.67,-157.39)    2.34                 6
 12/26/2017   19:08:48   (  79.52, 149.87) 12/26/2017   19:07:59  (  79.51, 149.72)    3.14                49