Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 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)
 05/14/2018   11:25:34   ( -79.35,  84.48) 05/14/2018   11:24:36  ( -79.35,  84.49)    0.21                58
 05/14/2018   12:14:53   (  79.62,-106.02) 05/14/2018   12:15:12  (  79.63,-105.92)    2.25                19
 05/17/2018   03:42:02   ( -79.37,-159.51) 05/17/2018   03:41:31  ( -79.37,-159.63)    2.54                31
 05/17/2018   04:31:20   (  79.67,  10.23) 05/17/2018   04:32:06  (  79.67,  10.24)    0.21                46
 05/19/2018   19:58:26   ( -79.54, -42.50) 05/19/2018   19:58:21  ( -79.54, -42.42)    1.77                 5
 05/19/2018   20:47:47   (  79.72, 126.46) 05/19/2018   20:49:00  (  79.72, 126.39)    1.54                73
 05/22/2018   11:25:32   (  79.31, -95.81) 05/22/2018   11:24:37  (  79.30, -95.90)    1.93                55
 05/22/2018   12:14:52   ( -79.59,  73.70) 05/22/2018   12:15:14  ( -79.59,  73.72)    0.31                22
 05/25/2018   03:41:58   (  79.39,  20.58) 05/25/2018   03:41:30  (  79.38,  20.47)    2.37                28