Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 4.  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)
 09/05/2017   19:08:12   (  79.36, 148.76) 09/05/2017   19:08:06  (  79.37, 148.89)    2.96                 6
 09/05/2017   19:57:34   ( -79.55, -42.31) 09/05/2017   19:58:46  ( -79.55, -42.31)    0.05                72
 09/08/2017   10:35:20   ( -79.14,  95.58) 09/08/2017   10:34:25  ( -79.16,  95.71)    2.94                55
 09/08/2017   11:24:40   (  79.38, -95.27) 09/08/2017   11:25:03  (  79.38, -95.31)    0.88                23
 09/11/2017   02:51:47   ( -79.20,-148.22) 09/11/2017   02:51:21  ( -79.19,-148.24)    0.56                26
 09/11/2017   03:41:04   (  79.54,  21.72) 09/11/2017   03:41:55  (  79.54,  21.83)    2.37                51
 09/13/2017   18:19:41   (  76.83, 148.88) 09/13/2017   18:18:27  (  76.99, 148.19)   24.98                74
 09/13/2017   19:08:10   ( -79.36, -31.29) 09/13/2017   19:08:12  ( -79.37, -31.16)    2.97                 2
 09/16/2017   10:35:18   (  79.07, -84.84) 09/16/2017   10:34:32  (  79.07, -84.92)    1.56                46