Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 16.  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,-159.44) 05/17/2018   03:41:31  ( -79.38,-159.56)    2.51                31
 05/17/2018   04:31:21   (  79.65,  10.07) 05/17/2018   04:32:07  (  79.65,  10.06)    0.15                46
 05/19/2018   19:58:25   ( -79.55, -42.43) 05/19/2018   19:58:20  ( -79.55, -42.34)    1.71                 5
 05/19/2018   20:47:47   (  79.70, 126.29) 05/19/2018   20:49:00  (  79.69, 126.21)    1.69                73
 05/22/2018   11:25:33   (  79.28, -95.97) 05/22/2018   11:24:38  (  79.28, -96.07)    2.20                55
 05/22/2018   12:14:52   ( -79.60,  73.78) 05/22/2018   12:15:14  ( -79.59,  73.79)    0.16                22
 05/25/2018   03:41:59   (  79.36,  20.42) 05/25/2018   03:41:31  (  79.36,  20.29)    2.80                28
 05/25/2018   04:31:19   ( -79.64,-170.04) 05/25/2018   04:32:08  ( -79.64,-170.09)    0.95                49
 05/27/2018   19:58:24   (  79.47, 137.05) 05/27/2018   19:58:23  (  79.46, 136.92)    2.84                 1
 05/27/2018   20:46:33   ( -81.61, -29.05) 05/27/2018   20:47:47  ( -81.23, -28.59)   43.40                74
 05/30/2018   11:25:29   ( -79.33,  84.30) 05/30/2018   11:24:37  ( -79.32,  84.27)    0.71                52