Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 5 13.  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)
 05/14/2017   03:41:30   ( -79.45,-159.00) 05/14/2017   03:41:22  ( -79.46,-158.87)    2.74                 8
 05/14/2017   04:30:51   (  79.64,  10.01) 05/14/2017   04:32:01  (  79.64,   9.98)    0.66                70
 05/16/2017   19:08:37   (  79.23, 147.79) 05/16/2017   19:07:38  (  79.23, 147.76)    0.67                59
 05/16/2017   19:57:56   ( -79.54, -42.52) 05/16/2017   19:58:14  ( -79.54, -42.44)    1.59                18
 05/19/2017   11:25:04   (  79.31, -95.81) 05/19/2017   11:24:31  (  79.31, -95.85)    1.01                33
 05/19/2017   12:14:24   ( -79.58,  73.67) 05/19/2017   12:15:08  ( -79.58,  73.71)    1.03                44
 05/22/2017   03:41:31   (  79.39,  20.58) 05/22/2017   03:41:24  (  79.39,  20.54)    0.79                 7
 05/22/2017   04:30:51   ( -79.66,-169.91) 05/22/2017   04:32:01  ( -79.66,-169.86)    1.04                70
 05/24/2017   19:08:37   ( -79.27, -31.95) 05/24/2017   19:07:38  ( -79.28, -31.84)    2.42                59
 05/24/2017   19:57:57   (  79.50, 137.19) 05/24/2017   19:58:16  (  79.50, 137.20)    0.05                19
 05/27/2017   11:25:05   ( -79.26,  83.87) 05/27/2017   11:24:33  ( -79.25,  83.74)    2.86                32