Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 9 17.  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)
 09/19/2018   10:35:44   (  78.96, -85.57) 09/19/2018   10:34:34  (  78.96, -85.60)    0.48                70
 09/19/2018   11:25:02   ( -79.33,  84.31) 09/19/2018   11:25:09  ( -79.33,  84.41)    2.16                 7
 09/22/2018   02:52:09   (  79.09,  31.03) 09/22/2018   02:51:27  (  79.09,  31.03)    0.12                42
 09/22/2018   03:41:28   ( -79.41,-159.27) 09/22/2018   03:42:03  ( -79.42,-159.17)    2.25                35
 09/24/2018   19:08:34   (  79.20, 147.63) 09/24/2018   19:08:20  (  79.21, 147.66)    0.77                14
 09/24/2018   19:57:53   ( -79.52, -42.61) 09/24/2018   19:58:56  ( -79.53, -42.48)    2.65                63
 09/27/2018   10:35:42   ( -78.93,  94.23) 09/27/2018   10:34:39  ( -78.92,  94.12)    2.39                63
 09/27/2018   11:24:58   (  79.31, -95.77) 09/27/2018   11:25:12  (  79.32, -95.69)    1.82                14
 09/30/2018   02:52:06   ( -79.08,-148.97) 09/30/2018   02:51:31  ( -79.08,-149.04)    1.53                35