Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 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)
 05/17/2018   03:42:02   ( -79.38,-159.49) 05/17/2018   03:41:31  ( -79.37,-159.61)    2.52                31
 05/17/2018   04:31:21   (  79.64,  10.01) 05/17/2018   04:32:07  (  79.65,  10.01)    0.29                46
 05/19/2018   19:58:26   ( -79.54, -42.48) 05/19/2018   19:58:21  ( -79.55, -42.39)    1.78                 5
 05/19/2018   20:47:48   (  79.69, 126.23) 05/19/2018   20:49:01  (  79.69, 126.15)    1.60                73
 05/22/2018   11:25:32   (  79.31, -95.77) 05/22/2018   11:24:37  (  79.31, -95.86)    1.95                55
 05/22/2018   12:14:52   ( -79.59,  73.73) 05/22/2018   12:15:14  ( -79.59,  73.74)    0.32                22
 05/25/2018   03:41:58   (  79.39,  20.62) 05/25/2018   03:41:30  (  79.38,  20.51)    2.35                28
 05/25/2018   04:31:18   ( -79.67,-169.83) 05/25/2018   04:32:07  ( -79.66,-169.85)    0.56                49
 05/27/2018   19:58:24   (  79.46, 136.99) 05/27/2018   19:58:23  (  79.46, 136.89)    2.14                 1