Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 14.  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)
 12/16/2018   10:35:29   ( -79.38,  97.18) 12/16/2018   10:34:22  ( -79.38,  97.14)    0.80                67
 12/16/2018   11:24:48   (  79.65, -93.31) 12/16/2018   11:24:58  (  79.66, -93.30)    0.39                10
 12/19/2018   02:51:56   ( -79.51,-146.06) 12/19/2018   02:51:13  ( -79.51,-146.05)    0.17                43
 12/19/2018   03:41:16   (  79.74,  23.21) 12/19/2018   03:41:50  (  79.74,  23.26)    1.11                34
 12/21/2018   19:08:24   ( -79.60, -29.55) 12/21/2018   19:08:05  ( -79.60, -29.51)    0.73                19
 12/21/2018   19:57:44   (  79.82, 139.73) 12/21/2018   19:58:42  (  79.83, 139.82)    1.82                58
 12/24/2018   10:35:34   (  79.35, -83.09) 12/24/2018   10:34:22  (  79.34, -83.23)    2.92                72
 12/24/2018   11:24:51   ( -79.69,  86.96) 12/24/2018   11:24:56  ( -79.69,  87.03)    1.31                 5
 12/27/2018   02:52:01   (  79.43,  33.37) 12/27/2018   02:51:13  (  79.43,  33.26)    2.46                48