Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 10 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)
 10/18/2017   10:35:24   (  79.43, -82.56) 10/18/2017   10:34:31  (  79.43, -82.54)    0.42                53
 10/18/2017   11:24:45   ( -79.67,  86.75) 10/18/2017   11:25:09  ( -79.67,  86.77)    0.42                24
 10/21/2017   02:51:51   (  79.50,  33.81) 10/21/2017   02:51:24  (  79.50,  33.80)    0.21                27
 10/21/2017   03:41:12   ( -79.74,-156.83) 10/21/2017   03:42:02  ( -79.74,-156.85)    0.27                50
 10/23/2017   19:08:16   (  79.60, 150.42) 10/23/2017   19:08:15  (  79.60, 150.42)    0.07                 1
 10/23/2017   19:56:18   ( -81.73, -12.21) 10/23/2017   19:57:32  ( -81.32, -11.93)   45.90                74
 10/26/2017   10:35:23   ( -79.45,  97.62) 10/26/2017   10:34:30  ( -79.46,  97.69)    1.60                53
 10/26/2017   11:24:42   (  79.70, -93.01) 10/26/2017   11:25:07  (  79.70, -92.96)    0.92                25
 10/29/2017   02:51:51   ( -79.47,-146.38) 10/29/2017   02:51:25  ( -79.46,-146.52)    3.08                26