Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 12 23.  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)
 12/23/2016   18:19:45   ( -77.10, -30.11) 12/23/2016   18:18:31  ( -77.26, -30.92)   26.76                74
 12/23/2016   19:08:12   (  79.59, 150.39) 12/23/2016   19:08:14  (  79.59, 150.39)    0.23                 2
 12/26/2016   10:35:22   ( -79.37,  97.12) 12/26/2016   10:34:31  ( -79.36,  96.98)    3.11                51
 12/26/2016   11:24:40   (  79.67, -93.14) 12/26/2016   11:25:06  (  79.67, -93.17)    0.71                26
 12/29/2016   02:51:47   ( -79.57,-145.67) 12/29/2016   02:51:19  ( -79.57,-145.54)    2.81                28
 12/29/2016   03:41:08   (  79.75,  23.30) 12/29/2016   03:41:58  (  79.74,  23.26)    0.85                50
 12/31/2016   19:08:14   ( -79.64, -29.28) 12/31/2016   19:08:10  ( -79.65, -29.14)    3.00                 4
 12/31/2016   19:57:23   (  80.23, 143.19) 12/31/2016   19:58:37  (  80.17, 143.27)    7.19                74
 01/03/2017   10:35:21   (  79.47, -82.22) 01/03/2017   10:34:24  (  79.47, -82.14)    1.71                57
 01/03/2017   11:24:44   ( -79.63,  86.54) 01/03/2017   11:25:05  ( -79.62,  86.42)    2.62                21
 01/06/2017   02:51:51   (  79.45,  33.55) 01/06/2017   02:51:19  (  79.45,  33.41)    3.12                32