Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 11.  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)
 05/11/2018   19:58:29   (  79.48, 137.08) 05/11/2018   19:58:22  (  79.48, 137.01)    1.43                 7
 05/11/2018   20:47:48   ( -79.77, -53.17) 05/11/2018   20:48:58  ( -79.78, -53.04)    2.66                70
 05/14/2018   11:25:35   ( -79.34,  84.42) 05/14/2018   11:24:37  ( -79.34,  84.41)    0.19                58
 05/14/2018   12:14:54   (  79.61,-106.10) 05/14/2018   12:15:13  (  79.62,-106.01)    1.96                19
 05/17/2018   03:42:02   ( -79.37,-159.56) 05/17/2018   03:41:31  ( -79.36,-159.71)    3.19                31
 05/17/2018   04:31:20   (  79.67,  10.17) 05/17/2018   04:32:06  (  79.66,  10.15)    0.61                46
 05/19/2018   19:58:26   ( -79.53, -42.53) 05/19/2018   19:58:21  ( -79.53, -42.50)    0.72                 5
 05/19/2018   20:47:48   (  79.68, 126.14) 05/19/2018   20:49:01  (  79.67, 126.02)    2.61                73
 05/22/2018   11:25:31   (  79.38, -95.32) 05/22/2018   11:24:35  (  79.39, -95.19)    2.88                56
 05/22/2018   12:14:53   ( -79.58,  73.70) 05/22/2018   12:15:15  ( -79.58,  73.64)    1.36                22
 05/25/2018   03:41:57   (  79.47,  21.11) 05/25/2018   03:41:28  (  79.47,  21.20)    1.79                29